Originally Posted by Ari

You can buy premium airport departure service (which includes an escort from check-in to lounge or gate) for about $28USD per person. Arrival service (escort from gate to ground transportation or to the front of the line for transfer security) costs about $23USD; it costs $43USD if you want a golf cart from the gate.

http://www.bangkokflightservices.com/index.html

Their services are reasonably priced and flawlessly executed. ^