Ebay has a few slides showing, seems to be $185 range.
Maybe you can find someone who does laser etching and make good of the scuff somehow in a decorative way?
Yours may have some worth to someone else to re-coup some replacement cost.
Good luck, I know how it is to have a blemish on a nice gun that you can't live with!
Karl
If it shoots well, spend your money on ammo and enjoy it.
No offense but there are "show-ers" and "shooters". A new never fired Shield is not a "show-er", it's a fairly inexpensive pistol meant for self defense and carry (a shooter). Forget about what it looks like and enjoy it for what it is.