I've said it before, and I'll say it again, at the risk of being repetitive. As far as I am concerned Tantric is just a pretentious excuse for an overpriced wank. Something you could do yourself for free, in other words. Sorry, Tantric fans.
Seriously though I have for most of my adult life paid good money reasonably regularly for a massage without a HE - always have done, great for de-stressing, and for sports it's almost essential to work out any kinks. I was having sports massages once every week or two in the build up to my last triathlon, couldn't imagine training that hard without it.
I quite happily hand over £50 - 60 for that service from a trained masseuse. Now, maybe massage just isn't your thing which is fair enough - if you wouldn't pay for a regular (non-sexual) massage I can see why it wouldn't make any sense at all to you.
For me to pay £60-70 for the same massage with a hand job makes perfect sense. A massage is always sensual and if the masseuse is a sexy lady who wouldn't want her to tug you off? If you're paying £20 extra vs a regular massage definitely yes. And having someone else wank me off is never the same as a DIY job.
For me personally I often go for vanilla massages with a BJ / CIM or with full sex - now we're talking maybe twice the price of a regular massage, but that still seems pretty reasonable and far removed from the realms of having a wank all by myself.
The tantric thing - it certainly can be a bit of pretentious new age crap - and it means totally different things to different people. Certainly descriptions I've heard of tantric from different WG's are all different - but my personal experiences have all been great. Very erotic, sensual, more blatantly arousing throughout, and then to finish with a BJ or sex!
I'm sure different girls give a different quality of service just as in regular massages and regular WG's. As with any service YMMV. But it works for me every now and then and if you haven't tried it why knock it?
In the immortal words of Gary Coleman - "it takes different strokes to rule the world? Yes it does!"