It's probably used as advertising for the other services then!
That's quite naive & very judgey
I worked in the fetish industry for a while & you'd be very surprised what some men will pay for, & it isn't likely a cover for anything other than it says on the tin, buying her used tights. I've even come across used Birkenstock fetishist, the better the foot print wear in them, the bigger the price 🥴 men (mostly) are friggin weird creatures at times. No need to project anything else onto this woman, other than what she owns up to, because chances are, that's all she is doing