From the photo, that is the correct conformance to match the 2002-2006 key.
(it's possible it's a VW blank)
It also appears to be the correct "ten tumbler" length.
Certainly i'd be willing to risk $18...
And then i noticed the Interchange number (BYS15TK1) on that eBay listing.
Googling *that* loops us right back to this nice posting here in Sprinter Forum:
https://sprinter-source.com/forums/showpost.php?p=81703&postcount=31
So "Yes", i'd buy the key and have a cooperative local locksmith program it.
"Cooperative" means that they have a Bianchi "Repli-Code 7 TX Programmer",
in which case they may even have that Bianchi Key Blank "BYS15TK1"
(the beginning of the thread
https://sprinter-source.com/forums/showthread.php?t=965 has more discussion)
--dick