I wouldn't tip a FS WG, either agency or indie, but massage girls I play by ear, if you agree a price for extras and find you get a bonus then its worth showing your appreciation, well I think it is, plus it pays dividends on return visits.
Thanks for the clearer, shorter statement of what I tried to say.
Case in point:
1hr massage = £45
Agree b2b for £40
Enjoyed: RO, OWO, CiM, FS, (D)FK, enthusiasm (she instigated OWO, she appeared to enjoy RO, she encouraged the fucking, she retained cock in mouth despite being warned I was coming), 30+ mins of action, shared shower, dressed me at end.
Perceived value compared to past experiences is that this has not been found for less than 100 ph (having sampled more than a few WGs at 60 and 80 ph and 60 phh) and arguably 150 ph
Tipped +10
Total cost 95 for first encounter.
Repeat meetings @ 95 ph inclusive achieved up to 60 mins of said action as the massage component was dropped early at the instigation of the SP.