I'm just making sure I understand correctly -
Decent hardware to capture RCA/Composite outputs from e.g. a VHS VCR will cost something like $200? For Canopus / Grass Valley DV Bridges. There's nothing cheaper.
This is what folks have suggested in a couple of threads I've been in.
FWIW I'm not against buying used stuff, but I can't buy anything complicated. I can barely get new, "easy" stuff to work (like PE).
There are cheaper divices around but the usually give out of sync problems.
Grass Valley converters are not complicated. Just hook them up and capture.
All you need is the red/white/yellow cables and a firewire cable.
Your computer does need a firewire connection.
I whole-heartedly agree with Ann! You can't get more bang for the buck.