How do I obtain a re-entry permit at Suvarnabhumi Airport in Thailand?

Thought I'd share my experience of getting a re-entry permit from Suvarnabhumi Airport this morning. The desk is located in International Departures 2. You pass through security, go down the escalator towards passport control and turn right at the bottom. The desk is situated in the far left corner. The staff fill in the form for you and take your photo, then take the form to some back office for processing while you wait, and return it to you when done. Very simple process, the whole thing took less than ten minutes, although I was the only one there. Price is as normal, 1000 for single, 3800 for multiple, plus 200 for admin fee. Receipts provided for all.