What's happened to Deals with Gold - GW2

I just saw that Plants vs Zombies GW2 Deluxe edition is on Deals with Gold. I've only ever been mildly curious about this game, hence I've never actually bought it but when I saw 80% off I thought I'd finally check it out. When I went to the purchase screen
it said the game is no longer available, yet this week's Deals With Gold list has only been out for a few hours.

Anyone know what's going on?

:)