Only go with the signature not whether it has a shiny sticker. You only need a sticker these days if selling on eBay etc as so many fools only buy if it has a sticker
I do agree with you, Dan. Don't just buy because of the sticker. I have seen some pretty egregious errors by PSA/DNA. But you're right. It can be hard to get full value on eBay without a PSA LOA.