@Terry ******
the in country 90 day Non-O visa costs 2000baht, goes under consideration for 14 days then you go back and get the Non-O visa and a new 90 day stamp inked in.
THEN when you have 30 days or less left on that stamp (and your funds are seasoned in the bank for 2 months) you go back and apply for the year extension for 1900baht.
you'll get a 30 day under consideration stamp and during that time they'll come to your house and do a home visit, then when that stamp runs out you go back to the immigration office and they will ink in the year extension