How about Ctrip Thailand Tour Group?

after sale, it's not bad. It's all done by phone. You don't have to go to the store all the time to listen to people's bluff. Going to the present small store is easy to be fooled by people, and it is not the same as promised when I join the group. And don't worry too much about the price difference. In case it's the trip of the participating clubs, there will be 4 or 5 different prices in a group.