I just want to throw my 2 cents into the pot about tips in MP's. I have had everything from FS for 20 plus 40 house fee at Pacific on 44th (sara / with anal) to 120 plus 60 house fee for an absolute porn star fuck session with Mikki at the Islands in Lansing and everything in between. Why we tip and how much we tip has many factors. The girl, the establishment and what we are looking for (service) all play a part. Same goes for Escorts, I have had FREE service (Ivy) to paying 400/2 hours with Thai Princess. Overall, I try to keep my donations low so I can visit more frequently, but I have the occasional exceptions on both ends of the price spectrum. Most of us know the "standard" rate for tips at MP's and donations to Escorts but even I don't follow the norm now and then.