VERBS

be, be going
a brand new radio going cheap
buy sth, sell sth
They're selling fabrics cheap this week
not come
Shoes like that don't come cheap

ADV

amazingly, extremely, incredibly, remarkably, ridiculously, very
It's a good restaurant, and incredibly cheap
comparatively, fairly, pretty, quite, reasonably, relatively
hardly, not exactly
At £60,000 the car is not exactly cheap (= it is very expensive)
suspiciously
The watch was suspiciously cheap; it was probably a fake
buy/get sth on the cheap
The school managed to get a couple of computers on the cheap

VERBS

be, look
The glasses are plain without looking cheap

PHRASES

cheap and nasty
cheap and nasty products with brand names you've never heard of