migrantwing
Veteran
Cassette and chain not a biggie (c £20-£25 plus fitting). Does it definitely need new crankset? These are unlikely to be more worn out than the cassette and shouldn't cause any issue. Bottom Bracket, local bike shop could probably replace that for around £40-50 I should think (including parts). New chainset can be anything from £40, but if fitted when the new bottom bracket goes on won't much to labour costs.
Assume fork is steel so rust shouldn't be too much of an issue, but obviously that would add to cost if it needed replacing, though you can get carbon forks for around £80 I believe!
I can save a bit of cash as I'd do all the fitting myself, it's not so difficult. As you say, the chainrings may be OK as may the fork and BB. The BB probably just needs a service/re-grease as the bearings feel smooth enough as they are.
The whole groupset is Sunrace R80, which isn't great nor is it awful. Don't know the state of the front and rear mechs as I haven't ridden the bike for well over 12-18 months. Smaller parts, inner/outer cables and tubes and tyres I have in a box of bits and spares so can save money there, too...Just need to wait until the beginning of next month to pick up my first paycheck. Hate monthly pay with a passion!
Thanks for the reply, Psyclepath.