cheap
1 bargain, cheapo (informal) cut-price, economical, economy, inexpensive, keen, low-cost, low-priced, reasonable, reduced, sale
2 bush-league (Austral. & N.Z. informal) chickenshit (U.S. slang) common, crappy (slang) dime-a-dozen (informal) inferior, low-rent (informal, chiefly U.S.) paltry, piss-poor (U.S. taboo slang) poor, poxy (slang) second-rate, shoddy, tatty, tawdry, tinhorn (U.S. slang) two a penny, two-bit (U.S. & Canad. slang) worthless
3 base, contemptible, despicable, low, mean, scurvy, sordid, vulgar
1 costly, dear, expensive, pricey (informal) steep
2 & 3 admirable, charitable, decent, elegant, generous, good, high-class, honourable, superior, tasteful, valuable