Going by a quick look at completed listings on eBay, the following seem reasonable (all posted):
£25 for rear mech
£15 for front mech (I think braze on, no clamp for seat tube)
£50 for STI shifters (pair, 2 x 10)
£40 for cranks (175mm, no BB)
£120 for the lot. Give me an email (bpbrown1986*at*gmail.com) if you’re interested and I can send you pics. Won’t be able to send pics or post them until next week though.