The cost was 350 baht per day when I saw them last. Perhaps they have reduced the price to 250, but I don't know about that.
Friends have used them in the past for times when they needed a runaround for a few days.
No hidden charges nor scams, as suggested by the cynics here.
If you aren't too proud, they get the job done. Good luck and apologies for all of the Trolls here.
Sadly, this board is rarely any longer a useful resource. Most only post due to having nothing better to do than to post silly comments.