FYI: Marriott certs are going for 80 cents on the dollar:
This outfit has frequent auctions for $100 certs. They typically sell for $78-$82.
I have not purchased anything from them, nor am I affiliated with them. I did unload on eBay a couple months some certs I wasn't going to use.
On the road,
In the air,
I enjoy travel
From here to there.