I have 6 $200 cad eBay giftcards, I bought them to avoid using my PP on an eBay purchase but it turns out you have to use PP even if 100% of the purchase is covered by giftcards. Anyways, I am trying to get some value out of them. Will trade them for other giftcards, crypto, or e-transfer (Canada only). Make an offer.
And yes they do work on ebay.com too.