HOF's "props" line in the Lavinia thread is an instant classic.  It also hit a nerve because there is in fact a lot more upselling by TS providers than GG providers.  More than once I've talked to a very popular TS provider who claimed to be busy or tired and I could just feel that if I increased my offer I'd be in her room in a heartbeat, with some other poor soul left out in the cold. Now add to that the obvious point that for some TS providers there are only so many times they can come in a single day, so therefore . . . .  So therefore WHAT?  
I know GG providers who feel worn out after a couple of sessions so they only schedule 2-3 a day.  But in the TS world it often seems that cash is king to a point beyond reason.  It all leads me back to the same place.  A truly feminine TS who will let herself get turned on in a session and will not pull any of the jive listed by HOF is a rara avis and, when found, a true treasure.  But the rest of the TS universe, while somewhat intriguing, just leaves me cold.