Some people mistakenly think that the online info from Thai Embassies, where it says visa validated for six months means they can stay for six months one time.
I don't know how the Thai inland revenue are going to check if a foreigner is in Thailand for more than the 180 days that qualifies the foreigner to pay tax.I can't see the immigration department conferring with the inland revenue, be opening a can of worms. π
He does say for a little stay, one can read that anyway they want, but you'd imagine he means for a short while. A Thai can get a visa that allows them to stay in the UK for upto six months in any one year. Thailand doesn't offer a tourist visa that allows you six straight months stay.
Β£3000 = 135,000 THB. 20,000 for agent for visa 'O' retirement, plus before he goes to live there he'll probably of saved enough maybe to get an 'O' visa based on marriage with 400,000 in his Thai bank account, then no problem. I think he's a bit confused.