However there're many reasonably priced cheong places frequented by Thai locals whch I partake as well.
Let the "tourists" pay tourist price.
For me if talking about value, VND600,000 for ST should be perfect but with the hyper inflation in Vietnam I know costs have gone up a lot.
Please pardon me for the old school pricing.

That's why I commented previously of the high prices that people pay for ST/LT these days.
Case in point yes the hyper inflation in Vietnam.
I'm only going to compare places with full sex service and average quality of 5-6/10 in 2014.
Txx Bxxx Barber Shop (Ho Chi Minh)
Duration: 60min
Number of Shots: 1
Price: VND800,000/S$48.48 (Rate @ 16,500)
Note: Price change in 4 years. When I just started the price is hovering around S$38-40.
Petchaburi Soapy Massage Parlour (Bangkok)
Duration: 120min
Number of Shots: 2
Price: THB1400/S$54.68 (Rate @ 25.60)
Note: Price unchanged for 10 years or more! Thai Baht is abnormally weak now due to political unrest. Even at 24.0 rate it's still only S$58.33.
Although the Bangkok one costs S$10 more but the CPF (Cost Per Fuck) is only S$29.165 as compared to the Ho Chi Minh one at S$48.48.
In conclusion I feel Ho Chi Minh is really value for money 4 years ago when compared with Bangkok.
Now it's either on par or even more expensive than Bangkok.
Readers can decide for themselves which is more value.
