I think the answer to this is "It depends". Some saunas/massage parlours/brothels (choose your preferred word or phrase) have comprehensive websites which list all prices for all services, and whether ot not there is a supplementary door fee. Some others either have no website at all or one which is so vague as to be useless. Where the website is a detailed one, pricing information is superfluous in a review- apart from the fact that providing it obviates the need to cross-reference the website. Where there is no pricing information, I would regard providing it as an essential part of the review.
I should perhaps add that in all cases where the reviewer feels he has had exceptionally good/bad value ofr money, it is necessary to state the amount paid, otherwise the reader had no frame of reference. "Fantastic value at £200" might be somebody else's "Rip-off".
