I think that they may still offer 7 or 10 day extensions at Thai Immigration.
Last time I used it, the cost was around 2000 baht.
When the junta, took over the government...and all the immigration rules started getting fuzzy and confusing and "frightening", I went for the 60 touris day visa.
Shortly after the coup, there was a "visa run" bus that was stopped, and some of the tourists (detained), by Immigration, for having expired visa's. I think one of the guys, was only over by a day or two.
Just not worth the worry.
The 7 or 10 day extension, costs almost as much as the 60 day tourist visa.
Pablo
