This guy has one in PA for $400.
https://www.facebook.com/groups/958426214184968?view=permalink&id=3670289252998637

We post a lot of projects in the below forum and many are EMs.
https://pinside.com/pinball/forum/topic/post-project-pins-for-sale-here-cl-ebay-pinside-and-others

You missed a great deal. Buy it at that price and get it going. The game is 57 years old. Not surprising it didn't work.

That's a hell of a price depending on the condition of the playfield and assuming all the mechanicals are present. You can fix the rest.

If someone shows up to my door with a Sweet Hearts for $350 I'm saying put it right there...

The backglass is no big deal. You can get that.

If it's the game linked above that would have cleaned up pretty nicely. Heavy ball track up top but I've fixed worse.

Out here in the Great Midwest games like that are hard to get at that price.