For a few years now, the donation price has gone up and the quality of service has gone down.
As far as using other provider advertising websites goes, the ladies are the same, but they have different donations depending on the site you found them on, kinda weird, but it is what it is.
I personally have providers I have seen regularly for years and have grandfathered in donation prices by them. Rarely do I see a new to me provider, mainly due to the aforementioned donation/quality level ratio.