Until you are the seller and want to get paid for a cert lol.
Everyone knows there is a risk here... Though 90% of the time there is no issue and the risk is the same no matter who purchase from. We also clearly spelled out when you submit a booking request.
Buyer is staying at hotels for 10% the listed rate, the broker (myself) makes 10%, the major markup is on the buyer side therefore he takes the risk.
Once again, you may disagree and you are entitle to start a business where you will take the money back from sellers 8 months after you paid them and see how that goes.
If the buyers are saving 90%, the risk is on them. That would only be fair. 90% savings with a 10% risk. No where else can you get numbers like that.