I've seen a few of their SPs post ads on Tryst as well, which is curious if the agency is still operating?
I know we can't discuss rates here specifically but, generally speaking, BA made a classic mistake of believing their own hype without establishing themselves first.
Sure, there are independent girls with higher rates than BA, but the ones that make it work generally had a track record with an agency or gradually built their business and justified increasing their price point over time. We often see prices go up and then go back down with independents and even some agencies, proving that "the market" has it's own logic.
Unfortunately, BA parachuted on to the scene with zero track record yet chose a pretentious and unrealistic price point. The successful agencies that have been operating consistently with high-quality SPs (LUXXXE, VME, 1122, 2274, etc.) all have lower rates and have built their business over time.