Streams Life

How do i get all this grease and build up out of my air fryer
I can scrub jt a bit but there is always residue left over and ive given up. Would appreciate any help to get this looking as new or clean as possible.

Pick a bar, any bar

Gold bar blemished - keep or send back?
I got this 1oz Perth mint gold bar, primarily because I thought it was cute. However I was a bit less impressed when it arrived, you can see that the finish on the top/right side is matte and the writing on the top half is discolored compared to the bottom half. They were sold as new so not sure whats going on. Anyhow, should I keep it or send it back? Do people here find it acceptable? Does it affect sale price? Thanks.