I've just bought another Condo and the TT3 was supplied by my bank without issue, I seem to remember it cost 500thb - nowhere near the amounts you've been quoted. The Land Office however are "special" - because when I transferred the money from the UK, I chose to let my UK bank send in THB (not GBP), we had to pay 5000thb 'tea money' - even tho I produced the UK statements showing the GBP amounts that were sent over..............