Check some of the threads on KTVs....
I dont know the pricing on boards too as i cannot read chinese....
My advice is stick to $2000 as a budget and try one out.....say for 2hrs..which is more than enough for all drinks and girls sitting with you and eventually the deed if gal is okay.
Certainly stick to MK/Jordan area compared to TST east areas where $2000 will not go far........
Being ripped off you may or may not but you will only live and learn....
If it was a good night then try again and build rapport with that particular Mama/papa.......everything will unveil...
Cheaper, some free drinks, better girls and of course better service...