Quoting software for tradespeople: when SaaS is not enough
Off-the-shelf SaaS tools cover most cases. Here are the conditions under which they stop being enough and you need a tool built around your process
A window and door installer I worked with showed me how he put a quote together: he opened three different Excel sheets, one for profiles, one for glazing, one for fitting labour, and copied the numbers by hand into a fourth sheet that became the PDF sent to the customer. One quote took him forty minutes, plus another ten to fix the copying mistake he almost always found after sending it.
The first thing I told him was not "I will build you a custom tool". It was: try an off-the-shelf quoting software first, there are good ones and they cost little. In his case it worked. It does not always work, and that is the reason for this article: search for "quoting software for tradespeople" and you find a dozen products that look alike, and none of them tells you when they stop being enough.
What off-the-shelf quoting software does well
A quoting SaaS does exactly what it was built for: turning a list of items and prices into a professional document in a few minutes, without laying anything out by hand. If your catalogue is stable, prices are the same for every customer and you write the quotes yourself, it is the right tool: it costs little, you learn it in an afternoon, and it removes the work you used to do in Word or Excel.
What quoting software costs today
Prices are low compared with any custom development. Prevy, an Italian product designed for tradespeople and small businesses, starts with a free plan of five quotes a month and moves up to subscription plans tied to the number of quotes you generate: the difference between one tier and the next lies mainly in volume and in light customisation, such as your logo on the PDF. What I have not yet seen in this product range is the handling of complex product variants.
plancraft, designed for building and installation trades, sits in a different bracket: its public price list starts at 54.90 euros a month plus VAT for the Business plan on a monthly commitment (35.92 euros with a two-year commitment), 104.90 euros for the Pro plan, which adds cost recalculation and purchase invoicing, and 184.90 euros for Premium.
| Software | Entry price | What it covers |
|---|---|---|
| Prevy | From €0/month, then volume plans | Simple quotes, basic CRM, no product variant handling |
| plancraft | From €35.92 to €184.90/month | Quotes, job sites, cost recalculation and purchase invoicing on higher plans |
The price gap already tells you something: the more the software tries to cover processes close to quoting, such as job-site costs or invoicing, the higher the subscription goes.
My advice: before looking at custom software, try an off-the-shelf SaaS for at least one full month of real work. If the limit you hit is "I would like to, but it cannot be done", you already have the criterion for the next choice. If the limit is only "I would like it better", the SaaS is enough for you.
The four cases where the off-the-shelf package stops
This is where I stop giving a single answer, because there is not one. In the projects I have worked on, the limit of off-the-shelf SaaS almost always shows up in one of these four forms, and each can be recognised in a precise way.
Too many product variants that can be combined: a window installer selling ten profiles, five types of glazing and three finishes already has 150 price combinations. If each combination has a different cost and is not a simple sum of its parts (a quantity discount, a processing cost that changes with size), a static list of items is not enough: you need logic that calculates the right price for each combination, not just one that adds up lines.
Different price lists by customer tier: if you charge different prices to a private customer, a reseller and a company that brings you recurring work, a SaaS designed for a single price list forces you to edit prices by hand every time. The warning sign is when you notice yourself "adjusting" the quote after the software has already generated it.
The quote has to talk to other data the SaaS does not handle: stock availability, production times, data that ends up in invoicing in a specific format for your accountant. If you already export and import files by hand between the quoting software and other tools, that manual work is the hidden cost no subscription of a few euros a month removes.
Several people write quotes with different rules by role: an owner who sees all the margins, a technician who sees only list prices, a salesperson who can apply discounts up to a threshold. The basic plans of off-the-shelf SaaS almost never separate these roles, or do so only on the most expensive plans, where the subscription gets close to the cost of a custom tool without reaching its precision.
Not sure yet which of the two groups you belong to?
I have prepared a printable assessment grid: six questions about your quoting process (product variants, customer price lists, labour calculation, invoicing, people involved, monthly volume) and a score that tells you whether an off-the-shelf SaaS is enough or whether you are already paying for the limits of a generic tool in hours of manual work.
Open the assessment grid (in Italian)
What changes with a quote calculator built to measure
A custom quote calculator is not a management system and does not replace one: it is a web app designed for a single task, calculating the exact quote for your catalogue and your pricing rules, and returning it in a format the customer reads straight away. In the custom web app projects I build for small businesses I always start from the real process, not the software: I understand how a quote is put together in the company today, where time is lost, where mistakes happen, and only then do I decide what calculation logic is needed.
The practical difference is that the tool reasons the way the owner does when working out a quote in their head: it knows that a window above a certain size costs more per square metre, it knows that a regular customer has a different discount from a new one, it knows that a certain job takes more hours of labour with a specific material. A generic SaaS does not have this logic, because it has to suit thousands of different businesses: the more specific your way of pricing, the less a product designed for everyone can follow it.
Off-the-shelf SaaS: a list of items at fixed prices, added up to a total. Fine if your price is always "quantity times unit price".
Custom quote calculator: calculation logic that replicates the company's real rules (product variant, customer tier, variable labour). Worth building only if those rules exist and weigh on day-to-day work.
A mistake I corrected: starting from the software instead of the process
On the first quote calculator I worked on, for a client who installs heating and plumbing systems, I started by designing the interface before understanding how a quote took shape in his head. The result was a technically correct tool that he kept using "alongside" his old method, because it did not reflect the order in which he thought through the items. I rebuilt the calculation logic from scratch after spending a week watching him write quotes by hand. Since then I always start from the real process, not from the interface I imagine.
What I would do in your position
If I had to decide today for a trade business, I would always start with an off-the-shelf SaaS for at least a month of real use: it costs little and tells me exactly where it breaks, if it breaks. I would invest in a custom quote calculator only if at least two of the four points above weigh on weekly work, not just occasionally, and if the volume of quotes is high enough for the time saved to exceed the cost of development in less than a year. Below those conditions, a SaaS costing a few tens of euros a month remains the most sensible choice, and I am telling you that even though custom tools are what I build. If you want to see how I reason when a tool is built from scratch, I described it in the case study of my own website.
Frequently asked questions
Does a custom quote calculator replace the management software I already use?
No. It is a web app dedicated to calculating and generating quotes, not a management system. In most cases it sits alongside the tools you already use for invoicing and accounting, exchanging data with them where needed.
How much does a custom quote calculator cost compared with a SaaS subscription?
A SaaS subscription costs from zero to a few tens of euros a month. A custom tool has a higher initial investment and no equivalent monthly fee: the right comparison is between that investment and the hours of manual work the tool removes over time, not between the two fees.
How many quotes a month make a custom tool worth considering?
There is no single volume threshold: the complexity of the calculation matters more than the number of quotes. A business that writes ten a month with dozens of product variants to combine needs a custom tool more than one that writes a hundred, all from a simple price list.
Does your quoting process have rules no generic SaaS can follow?
I look at how you write quotes today and tell you honestly whether off-the-shelf software is enough or whether it makes sense to build a tool around your real process.
Key takeaways
- •A quoting SaaS costing a few euros a month is enough for most tradespeople with a simple catalogue
- •The off-the-shelf package stops at four precise points: product variants, price lists by customer tier, integration with invoicing, several people writing quotes in parallel
- •A custom quote calculator only makes sense when one or more of these points weigh on day-to-day work
- •The criterion for deciding is not how much the software costs, but how many hours of manual work your current software cannot remove
Ekaterina Ponchak
I build websites and AI-powered web apps, and I handle SEO and digital marketing for Italian small and mid-sized businesses. I turn an online presence into real enquiries.
