Cheap ones can be a b*stard to fit, but once on they're usually ok. Just keep the plastic grain died with autoglym bumper care, else the bumper will be white in about a year! I got a set from euro car parts once, and they fitted ok, but as i said, fade quickly.
Where abouts you located? I have a genuine (used) pair you can buy (i can colour code if you want as well)