Pulled gray Rey poster

Hey, so I don't really use this app that much, I just check in every day and splurge on a bunch of packs every once in a while.

I don't use the trading functions or anything, I just like collecting cool looking cards. But I just pulled this gray Rey poster, and it seems really rare, 380 or printed so far.

What should I do? Just hold on to it and be happy I got it?