1st rule of buying Excercise Equipment - CraigsList is your VERY BEST friend. Most stuff you will find on there has been used once and then turned into a shelf or clothes-rack or space-filler.
I have a NordicTrack CX-1055 that's a few years old, lists for about $1K, bought on CL for $200.
I think it's pretty nice and sturdy for the money, and it has electric ramp adjustment. Some don't.
If you can get into a used PRECOR that's not tired and used up at a nice price, I'd suggest that too. , but to find one that has moving handles and height adjustment might be a little too expensive.