If you're about to consider works and expect to hand over thousands of pounds, would you really want to rely solely on a verbal agreement?
I know you should be able to have that must trust but from the past experience of countless others, I'd say a written quotation should be provided as a minimum.
So long as you both understand it's a quote and not an estimate.
The thing is, it's always best to use a REPUTABLE tuner.. do your research and you will be less likely to be burned.So did I, get a quote.
But a quote is just about money and the quote can change when their sales tactics kick in once they have your car apart. (Their greed)
A quote doesn't cover you for incompetence or lack of knowledge does it?
It just clarifies the amount your spending and what they are doing to the car.
It doesn't exactly tell you it takes ex amount of time to build the car unless they are top level tuners that 100% know what they are doing or the fact that the company in question can't actually do the job properly and has to employ external services for help or the fact they are to tight ass to even do that and just palm you off and show no interest?
I classed my quote technically as a close as best estimate (yes things can crop up when doing the work, aka tuner finds issues weak/worn parts whilst working thats normal -they advise and it's upto you if you replace, unless obviously nessesary) as i discussed the build with the tuner... agreed all the parts, the labor, and so the work began, the build was then completed... the price stayed the same, i paid and have been driving said forged build for 2 years no issues, aka the build was done to a very high standard as expected, akin REPUTABLE years of experience tuner.
If you get a to cheap no frills, back street buy cheap buy twice tuner, expect to get turned over.
You all know who, again the REPUTABLE tuners are, and who the no so ones are as well.