1900 baht at my local immigration office. Costs the same at all offices but some have slightly different requirements. I now get my extension based in monthly payments so no need to tie up
I changed from an agent to getting my extension myself and my local office did not check that my funds had been in the bank as required by my previous extension. Its worth your while trying to get your next extension yourself for 1900 baht but go as early as you can either 30 or 45 days according to your office. Find out exactly what their requirements are first. Good luck.
on the other point I renewed my long term visa recently too and the immigration officers could not have been more helpful. I changed from banked money to monthly payments.
same here. If I want to bring in 3 million baht to buy a condo and 1.5 million baht to buy a new car that is 4.5 million baht that will not come to Thailand if I am taxed on it here.