Pop down any Thursday evening from 6.30pm and have a look, chat etc.
£275 would get you going yes.
2wd is cheaper and there is just one class of 2wd.
don't bother with nicads/brushed, its old and slow and not really used apart from bashing and vintage.
go for a brushless system and lipo's.
pop into Apex models in Crowthorne they will help you, a RTR(ready to run) set up can be got reasonably now either new or used.
Pop into the shop or the club and you will see whats available.
