"I assume the tapes your are trying to copy are retail tapes or copies of retail tapes?"
Yup.
I tried to convert "Andy Kaufman Plays Carnigie Hall" (paramount home video) to DVD and it wouldn't let me. I tried to convert GORP to DVD (the video is very old and I thought it would be no problem) and it wouldn't let me.
I also want to be able to go from DVD to DVD, because sometimes I'll be making compilation tapes or something and there'll be like a 30 second clip or something that I can only get from a DVD.
That 100 dollar one looks good, and I'd be willing to pay 100 bucks for this

I'll just make the money back from selling illegal copies of HIGH SCHOOL HIGH or something. Have you ever dealt with that site before? Would there be any reason to be cautious buying from them?