Any of the offers in the clothing section of trail pay.
There is a certain amount you must spend like $30 to get reward.
Reward is about 400-600gc.
Might as well buy regular gcash.
The reward should be higher, there are some stores i would like to shop at threw gaia but its not something i really need.
Also i tried contacting trail pay multiple times about adding offers on gaia for popular stores.
Haven't heard anything back.