Have a look on eBay, either for the wheels themselves, or look at cars that are being broken that have wheels that you like the look of.
It's best to buy a complete set from the same car, so they all look and feel the same.. probably cheaper "per wheel" too.
Buuuut.... second hand 17" rims might have had a battering. Put each one on the car, one at a time, and spin it round. Put a pencil against the rim (inner rim is the most vulnerable) and checl whether the rim moves in and out, or up and down. Bent wheels will vibrate.
Ralf S.