you can get a whole suit for cheap online. order it a little bigger, cause it's probably made in asia somewhere, if not name brand.. then take it to a tailor.
i bought a perry ellis suit last year for $130.. got it hemmed up for another $10 and that shyt work. it's an expensive habit when you throw in shoes, shirts and tie's. but start off with the suit, then change up the other 3. then buy another... then buy more of the other 3... and so on
soon you'll be sporting jackets with jeans, full suits, pants and a top, tie or no tie.. sometimes throw a vest in... but you gotta get your bases down first before the accessories.. and no.. it's not gonna be cheaper than a tee and jeans... ever