$200 per minute with a 5 minute minimum purchase, so at the least you're paying $1,000 for a video that probably won't make you cum (and if it does it won't be very satisfying) so you're probably looking at $1,600+ for a satisfying video.
If she's tricking people into buying those vids then more power to her because she's got a massive catalog that probably has something that comes close to the custom there