Properly done. That $100 turntable will sound like absolute rubbish. The HIFI shop I frequent bought one of those $100 types just for the hell of it to inspect. It didn't even have bearings.
You'd be better off (actually MUCH better off) getting an old Technics off ebay and running it through a cheap phono into the stereo in on your computer.
Something like the unit pictured above goes a step further by having a halfway decent A/D converter built in, so you just hook up the USB to your computer and send it 0s and 1s.
LINK:
Bellari VP-530 USB Phono Preamp