Replying to From UK, Ski dryslope and fridge, boot question

Ok, so I know boot questions are outlawed but I live in the UK (Wales) and bootfitters are few and far between, let alone good ones. I tried an Ellis Brigham shop in Bristol but the "boot fitter" there was clueless. I have owned a pair of Salomon Quest Max 100's for 2 years and have been in constant agony (far too narrow even though they have "Custom Fit shell"). I've been looking at SPK 100, FT Booter/Descendant, Atomic Hawx, I would like to try all these out or at least get a pair that fit, any tip or tricks without spending a small fortune? Also, what is a reasonable price for custom insoles?

TL;DR Live in Wales, no boot fitters, need boots.