Revell Slant Six model, unbuilt, sealed bags, all there. WIW?

Selling price - VINTAGE ~ REVELL (1961) MOTORIZED CHRYSLER SLANT SIX ENGINE 3/27 | eBay

And I have that original, one of a kind letter that goes with it!!!
Thinking I'll ask $395. That's a a fair price to both me and the buyer.
I'll put it on the local Detroit Craigslist soon.