Playing through a pedal that goes straight into a crappy amp will do nothing but give you more crappy affects. Since your budget is so low I recomend you get a used amp. As far as which one to get... that's up to you, just play on a bunch 'till you figure out what sound you like best.
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BadHorsie, holdin' it down like Gravity!
Ain't nothin' but a Gear thang, baby!