Good pointUsing the the bank of England inflation rate calculator £100 in 1989 is now £246.85.
So you xt chainset is £320.78 and the full groupset £1110.70
Considering you can buy a new xt triple for £160, that makes it £64.81 in 1989....exage cost.
So if you wonder why stuff is crap now....theres your answer. If we were still paying those prices, you would probably get better quality kit!