Thai oil massage of the sensuous variety (Thai erotic massage, Thai sexual massage) is available in many locations. If the premises has lots of young attractive girls (especially if they are sitting outside) and is offering various forms of oil massage, and you are asked to pay 600-800 baht upfront, you are almost certainly in the right environment to achieve a suitable degree of relaxation, and a sexy Thai massage with extras, resulting in a very happy ending.
Note that most of these places also offer Thai traditional massage at a lower rate, so if you don't like being drenched in massage or baby oil, then specify a Thai massage - and the chances are you are not really in one of these places for the massage!!!
Many well-known venues (such as Tulip , Aviva , Teen 1 , 2 & 3 , Nataree etc) have a standard 1500 baht fee for "full" service, and if said service was extra-good, a little extra tip makes the girls feel really good about whole deal.
NB: Leaving the girls in a good mood is a kindness to the brotherhood...
Some places have a Fishbowl AND the option of either Thai or Oil massage, an assurance that a happy ending is indeed nigh. (e.g. Nataree Massage, Thewi etc). In these establishments, the ladies will negotiate a fee for additional services, usually HJ 500, BJ 1000, FS 1500 baht. They will generally let you know that it’s a serious possibility with a wandering hand – it is then up to you to respond by asking the question.
One common denominator is that invariably the girl’s English language skills increase dramatically when it comes to negotiating the $ part of the deal. They can all say “two thousand” very, very clearly indeed… And they usually like to get you into a state where you are bargaining from a position of weakness! Of course, you could say at the outset that "I'd like HJ/BJ/FS - OK? X,xxx baht, ok?" and get those pleasantries out of the way at the outset... You could also say that "You make me very happy, maybe I give you tip, OK?"
Usual format is that after choosing a lady - either from the fishbowl (e.g. Nataree), the line-up in the lounge (e.g. Aviva) or from the book (e.g. Teen 2) and paying the cashier for the session, you are escorted off to a small private room. This contains a shower, and a massage table or bed... In most cases, the lady will join you in the preliminary shower, and make sure you are squeaky clean from head to toe. This is a nice way to break the ice...
NB: In some places, there is no line-up and no book to choose from (e.g. Tulip) so you've either pre-selected a girl from their web site, or should ask the Mamasan to recommend someone for you. If you do ask the Mamasan to choose, be sure to explain what type of lady you like (physical - size, age, etc) and what you like to do - don't be shy, they've heard everything already and are keen to make you a happy, repeat customer.
Then there is the ultimate in barber shops, where you can get a shave, shampoo & haircut, a Thai or Oil massage. and a happy ending - all in one place! Now that really is a convenience store!
The usual cost is 800 baht upfront to the shop for a 2 hour Thai or Oil massage, and 1500 baht for “additional” services. A good example of this was Lotus (ex Baron’s) - adjacent to the Emporium, near BTS Phrom Phong - or Friends Barbers in Soi 39.