I replaced the ones on my Outback with 3rd party ones from Amazon. They weren't much cheaper but I could get them a lot quicker. At the time they were $50 for a pair. The original ones would lock up in hot weather and the tailgate would not auto-open fully. The new ones lock up in cold weather with the same result. There is a TSB related to these struts (#12-208-16), for the Outback at least, and my next move is to try to get them replaced via that.

BTW here's a cheap pair on Amazon for a Forester: https://www.amazon.com/Liftgate-Compatible-2014-2018-63269SG032-63269SG022/dp/B09VP7DYFS