I used to spend bigger dollars, but then I realized the idiocy of that, in my personal case, as the value received was never ever worth the money spent, even with the high end providers. Now I tend to stick to the occasional AMP or CL girl as a bridge between international trips. The savings, which adds up in a gigantic hurry, I spend in traveling abroad, seeing places of interest, and mongering. The money gets spent on girls there who both charge less (a lot less) and provide service worthy of the payment (a lot more worthy)
I figure, with 10 girls at $$$$/hr it costs me $4000 for 10 hours of entertainment in Van.
For that same $4000 I get 10 hours of entertainment with AMP or CL girls in Van ($1500 max), a trip to South America, including airfare/hotel/meals and at least 3 superior girls a day, including an overnight every night, with money left over to spend at the bar.
At a $300/hr price tag in Van I get exactly the same description as above(10 hrs in Van plus trip to South America) but I stay in a different hotel, and reach into my wallet for a couple of bucks extra for the drinks that weren't covered by the original three grand.
Basically a complete no-brainer for me, however I understand that tastes and lifestyles differ.