The amount depends on a few different factors. Factors like location, attractiveness, ethnicity and etc. I'm going to be pretty direct. The more south you go the better the deal I've found. When you go west towards philly it also becomes pretty reasonable but its not bargain hunting or anything. The value increases because the quality of girl is higher for what you're getting, but its not like picking up low ball offers is going to work on average.
Ethnicity matters because Asians tend to ask for the most and their range is usually 400+. The supply of asians is fairly low comparatively. The other ethnicities run the gamut and its more a question of what your preferences are. Attractiveness is obviously going to increase the price because the demand for them are going to drive the offers up. But, from what I've seen the quality of asians isn't amazing so I basically ignore asians because theres an insane demand for them and more often than not I dont think they're attractive enough to through all the trouble.
I'd say the average is closer to 300 to 400 for most of what I've seen. Its not a question of whether you think its worth it, but simply the economics of the situation. The popular girls are looking for 500, but will usually settle for 400. The room usually factors in another 150 because I personally don't want to be in a shitty room thats a sty. Also, theres a lot of escorts so if you drive the price that low, more often than not I've seen that they're simply escorts and they're just charging you for the hour. If that works, then its great. But everyone needs to keep their expectations realistic. If you're looking for a more sugar experience where its not as transactional then it'll be more.
I've met great people that are not counting the hours, okay with often your libido can go, willing to spend the night, have a chill conversation and etc. Be realistic and set your expectations with reality and everyone will be happier.