You've priced this exact job forty times before. So why does it still take twenty minutes to write up?
There's a particular kind of frustration in quoting a job you've done a hundred times before and still spending twenty minutes typing out line items, working the VAT, and formatting it so it doesn't look like it was knocked up in a rush between two other jobs.
The maths shouldn't be the hard part
Labour, materials, quantities, VAT, an optional discount - none of it is complicated on its own. It's just repetitive, and repetitive manual work is exactly where mistakes creep in: a forgotten line item, a VAT rate typed wrong, a total that doesn't quite add up because it was rebuilt from scratch under time pressure.
What actually speeds this up
Building quotes from saved line items rather than a blank page, with the VAT and totals calculated automatically, turns twenty minutes of retyping into a couple of minutes of selecting what actually applies to this job. The maths still gets done properly - it just doesn't need redoing from scratch every time.
The verdict
You already know the price of the job. The software's only real job is to stop making you prove it from first principles every single time.