Notes similar to yours have sold on eBay for between $12-$20. Seems hardly worth the effort. Uncirculated moderns do better.
I would say for sure a keeper, but I do think that condition would gauge any value as I did notice some folds.
Definitely loses value for being in circulated condition. Nevertheless, it's a nice note due to it's low print run. I'd put it in a protective sleeve and keep it.