A lower basic rate for vanilla with payable extras OWO CIM DFK and anal would be fairer. Lets say for arguments sake its £50 for a massage, covered BJ, DATY and sex then if we want to we have an option to add say £10 Anal, £10 for OWO, £5 CIM, and £5 DFK that would mean we cough up £80 but it'd give some of us a cheaper basic punt with the option to upgrade if she's worth it, this way we're not committed to paying £80 up front on a punt where we don't know if we're actually going to get what we think we've already paid for, its damage limitation.
Thats how it used to be before the all inclusive price structure came in.