I've given up on local Thai massage shops as the price for extras is getting ridiculous.
Which is why I've recently been to see the WG Apple (sadly she's not on VS today but I did review 4th September),
at least the £140 upfront is all that is paid, the massage might not be up to much but is probably on par with most Thai's these days -
plus the extra's are guaranteed
And if I wanted a GOOD even if legit, there is always Emma at Royal Thai