These are the Dephia Sleeves I used and here is what is currently being sold and here. I'm not a big stickler for "quality" of sleeves but more so bang for my buck. The Dephia was hard to beat but official sleeves (with the correct number), seem tempting.
I bought these .
$25 to sleeve the whole box. Quality is decent, given the price, and the fit is nice and snug.
I use a lot of FFG sleeve for other games. Compared to those, the $25 dollar set is a ‘grippy’ and less ‘slick’ which I actually liked.
What are the dimensions of these cards? I bought some for Gloomhaven a while back that I really like and could recommend.
https://www.amazon.com/gp/product/B0719TN8MB/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
You might be able to find them on eBay or somewhere else, but at the time when I bought, Amazon had the best price.