Has anyone ever sent items in to a website?

I came across the johnnybench.com website and was thinking of sending a couple of things in to get autographed. I was just wondering if anyone has ever done this sort of thing before. The website is operated by cei sports and seems legit. The prices for autographs are pretty good in comparing them to autograph show prices. The autograph would come with a cei sports coa. Just wanted to get some opinions. Thanks.
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CINCINNATI REDS
1976 - 1991 - Topps PSA 10
1983 & 1985 Fleer PSA 10
1985 Donruss PSA 10
Blue Ink Signed Topps Cards
Game-Used Bats/Jerseys
OPC PSA 10
MC & OC Cards
OTHER:
Eric Davis Anything
Votto, Willingham, Cantu, Doumit, Gomes
Baron Davis Game Used Jersey
I think they only accept postal money orders made out to Bench Enterprises.