I payed 259 for a rolling road remap, make sure it's rolling road remap so you can actually see the benefits instead of someone just plugging it in to a computer and saying it has gains
If you post your location im sure someone local could point you in the right direction of where to go. I.e if in leeds rs tuning is the place to go. There is also plenty of threads about remaps if you use the search function.
As said above not much gain to be had power wise. I had mine mapped to map out the flatspot fron the decat. Always best to get a before and after dyno print though to see actual gains. My ex made 194 then 201 once mapped.