There is a Ebay Seller called 'naturespirit' who auctions signed celebrity autographs all starting at $5.00. The 'item description' for all his items are all the same, 'brand new, was obtained through the mail...'
Don't know about the 2 photos posted (only gotten Rick and would have to dig mine out) but seems to be at least 3 ebay counts, probably more, that all use that same cheap number holo sticker. Some differences in their style of listing info, but all say by mail. Accts are stated to be in NY, LA, Vegas. I don't trust the Dick Van Dyke photos each has with about the same autograph but not quite how he tends to sign (D's are not close to what he signs normally.) Ya many people have qty items and start very low, but I don't trust those in general, or don't trust listing that way as a seller myself.
It's very suspicious because all the listings say the exact same thing. And I checked the seller's website. Nothing there except a box asking you for your email. And some celebrity addresses you can mail for an autograph. The seller has a lot of happy customers though probably because they got their celebrity autographs for as low as $15.00.