soft buck 

drugs for a low amount or a deal

joe let me get a dime of dro for the soft buck

soft buck by Bishop Medcalf December 8, 2006

softbuck 

(v.) 1. a slang term for a sawbuck.
2. Ten Dollars ($10).

Hey dude, lemme get a softbuck.

softbuck by Skulskit a.k.a Shady January 20, 2008