1st link - sold one for 1.33, and another with the Gogglestache (valued at 1.33-44) for one key

2nd link - the guy who bought it for 1.33 sells/hoards sets for 3 keys

3rd link - looks like a key for both the Ascot and the Gog. Assuming the Ascot is 1 ref, that puts the Gog at 1.55, and the seller isn't taking it

4th link - Gog sold for a Detective Noir (valued at 1.33)

5th link - Recent trade (like 1 hour ago) asking for 1 ref.

So getting 1.33 for a Gog is doable, since there are people who want to complete sets, but if there are people selling parts, and a fair amount of users do use spreadsheet, they'll go by its listed price of 1 refined