The first occasion the girl wasn't the greatest but the sex was wonderful. Myself and 2 mates had taken her to her flat, and she agreed a price of £20 each (back in the mid 90's)
Myself being the driver that night had first go, and she said it best if we paid at the end. The last bloke in took in the £60 and did his deed, but as we said our goodbyes he started to scarper up the street as he realised he hadn't paid. As we'd seen her previously we decided to return to pay up, but when we knocked on the door, we never got a reply.
The other time was about 5 years ago, got to see a WG fairly often, and we got quite close, and on one occasion she gave me the money back. She text me afterwards and suggested we never see each other again and she doesn't like to get too personal with punters. That unfortunately was the last time I saw her, I believe she moved to the south coast.