Looks like you got a darn good deal! Congrats!I was only going to add on if I found a decent deal, and apparently DVC resale gods were listening because it only took a day.
I got lucky as it was posted on Labor day, when I suspect fewer people are browsing the resale sites. The seller is the original owner (bought in ~2010), so she is turning a nice profit even at 137 (minus FIRPTA). I think her being international led to the slightly lower ask price vs. other contracts out there. I've bought 2 contracts from international sellers so it doesn't scare me away.