Does it support kindle unlimited
Yes.
Kindle Unlimited isn’t device dependent. It is a digital subscription.
https://www.amazon.com/kindle-dbs/hz/subscribe/ku?pd_rd_w=Wl7sx&qid=1607833665
It’s got 2gb of storage…I wonder how big a memory card you can use. I received a Kindle Paperwhite in April as a birthday gift. It’s the 10th gen, 32gb, 2020 or is it 2019? I don’t recall, it’s the waterproof one…and I’ve only got 2gb of space left on it. I’m a book collector, I’m not good about deleting them after I read them.
This seems like a good price…depending on how much more mem can be added. However, it might make more sense to find a more recent Gen on Craigslist or OfferUp, maybe FB…for close to this price since it is refurbished…I don’t know…