I only bought $100 from him. I called when I made my reservation and was told that the card did indeed have $100 on it, but when I actually tried to use it a couple of months later, there was such a hassle! The receptionist at the particular hotel I stayed at, jumped through hoops for me making several phone calls and whatever she did, I was given the $100 credit towards my room.
Before I left to go on my trip, I had actually reached out to buy more, but I was never responded too, luckily!