low-grade

bad, bargain-basement, bum, cheap, cheapjack, cheesy, coarse, common, crappy [slang], cut-rate, el cheapo, execrable, gimcrack, inferior, junky, lousy, low-rent, mediocre, miserable, poor, rotten, rubbishy, schlock (or schlocky), second-rate, shoddy, sleazy, terrible, trashy, trumpery, wretched