Mt. Airy NC was mentioned earlier, I go to school in Winston-Salem, not too far away, and have no idea if $150 for 2.5 hours is reasonable or not. A "reasonable" rate all depends on the venue worked. I'm sure a high-class suit and tie type establishment would probably pay more than your local burger joint, and tips would also be better. Also, some restaurants allow performers a set hourly or evening rate, plus tips. Other places decide that they don't want their performers receiving tips, so I'd imagine the flat rate would be higher than if one were also accepting tips.
Speaking of N.C. one place to get big tips is in Highlands. There are plenty of restaurants, but you would do well there. My family (In-laws) has a summer home there, Cullosaga Club to be specific, and I go there about 3 to 4 times a year. Never performed, but most of the people there are pretty high dollar. There are places in N.C. that the prices are in line with NYC, and Highlands is one based upon cost of living there.
That's my two cents