NP, I've done the same thing before. I've even seen items at a show and thought about it and walked back and they were gone! You still got a nice gun and a good deal. I wouldn't sell mine for that little. I really like the grips. The grips I'm fitting are finger grooved but not as thin.
Nice, I have one you can't beat a J frame.
I have a 66 (no dash) 4". I love shooting that thing. It was a gift from my grandfather. Nice gun! I hope you enjoy it. I like the grips too!
I think a .357 K frame is about the best power to size/weight ratio of any handgun out there. I love my old Model 15, but wish it were a 19, just for the occasional want/need for more power. My 3" Model 65 is probably carried more than any other gun I own. Great guns, super smooth actions and in stainless, durable for carry. I'm still looking for a good deal on a 19 or 66 to go with my son's 1894 Marlin!
And, yes, thos grips do look good. Most finger grooves don't fit my hand well, but when you find a pair that does, it's a great thing!