I've been using Thai Visa Centre for almost two years now. There's a cost above immigration fees, obviously. But after struggling for years with immigration, I decided the extra cost is worth it. Thai Visa Centre handles EVERYTHING for me. I do next to nothing. No worries. No headaches. No frustration. They're highly professional and communicative in every way, and I know they have my interests at heart. They remind me of everything that's due, long before it's due. It's a pleasure dealing with them!