OP, nice score on the 3" model 13. Your SW store REALLY worked with you at that price! So far I think the effort your putting into it is paying off. I'm on the fence regarding whether you should do some kind of refinish.

My local SW got a load of these guns in, too. My buddy first told me about them last weekend, we he went there to pick up a gun he ordered. He said most of them were pretty rough.
I went in this morning to check them out. The fellow behind the counter told me the guns came from a large police auction. Long story short, I decided to adopt a 12-3 snub they had in the "pile". It had most of its finish intact, with a few scratches and bluing loss on the edges. Generally, it was just dirty. It had the numbered to the gun grips on it (which I couldn't believe). It's stripped out and soaking for the week in a Hoppe's bath. The internals were incredibly clean but very dry. Likely one of those carried a lot but shot hardly at all guns.