I've done some $20 lap dances, but have completely steered away from it now. Frankly, the value is rarely there even for $10 dances.
When you start comparing it to other activities you can engage in, like grabbing a really nice dinner, or seeing a few movies with friends, or putting it towards a new bike, or even other services in the same industry, my enthusiasm for lap dances declines substantially. Has saved me a pretty penny! I don't regret spending that money, particularly in my 20s when that club atmosphere hit the spot, and anything with T&A had me pitching a tent. But I aint 23 anymore.