I guess "providers" don't think that people check multiple sites or cities.  As it happens, I just got back from a trip to LA, and when I was there I noticed and recognized this picture:

http://la.backpage.com/FemaleEscorts/sweet-irresistible-busty-blonde-21/9717568

Which looks awfully like this one...

http://washingtondc.craigslist.org/nva/ads/1695604182.html

So one, the other or both of these are rip offs.  It's probably best just to avoid both.

Allie - (650) 679-3572
Chase - (702) 236-3611

There's also at least 1 other posting using the same picture but a different name/number on BP/LA, but I can't find it right now.