Ive only used the Canon TC80N3 and it worked well but like you say its like $150. not cheap.
Ive been wanting to get another one but prolly not the Canon version since I wouldnt use it very often I have a hard time spending that kind of money on one...
So far Im leaning towards this $50 option:
Vello ShutterBoss Timed Remote for Canon with 3-Pin RC-C2 B&H
Plus if it doesnt work I can always return it... you can read the reviews on that link above.
ps. man its been a long time since I've been in your shop there... I need to make a trip there next time i'm in town.