I might be able to help.
I'm just stripping out some parts from my tandem, around 200 miles only...excellent condition.
2002 Daytona triple set:
Rear mech, long arm £45
Front mech (braze-on with 31.8mm adapter) £25
9spd Brake/shifters £75
2003 Centaur brakes £35
Ergobrain computer to go with them £40