Some would gig your practice amp at a coffeehouse. The Rumble is fine in a smaller bar at less than earsplitting volume. I've played on one a few times, needing earplugs but not maxed out. As to the price, dunno, used gear in USA is stupid cheap, as cheap as $250 sounds that might be a normal price?
Team Trace Elliot #1, IWNBARMPB Prezident, Mediocre Bassist #399, Old Basstard #86, PBBBC #2