英语翻译：“也就是说你只要花500元就可以在我们酒吧里做你想做的任何事情。”

That's to say only 500 yuan,you can do anything you like in our bar.
不用翻译得太文绉绉太复杂，本来就是口语

That is to say,you can do whatever you want in our bar if you pay 500yuan.

That's to say,you can do whatever you want in our bar if you pay 500 yuan.

That's to say only 500 yuan,you can do anything you like in our bar including fu-cking my ass.

That means you may be available to do anything you want with only 500 yuan in our bar.