If cheap is what you want, then look for TView PresoCard by Focus.
I picked up one of these brand new on e8ay for about $25.
Every now and then a dealer will sell a batch of about 50.
If you don't like e8ay, then 30 seconds of searching found
this for $66.95 at
TVIEW PRESOCARD PCCARD
Has both composite and svideo output.
Pix quality was comparable to ANY desktop TV cards, but
was limited to 640x480. They make another version that
goes up to 1024x768, but it costs more, and you stated
price not resolution as a need