It's not an amazing deal, not a bad deal, it's a good deal if you feel it's a good deal or if you really like the gun.
In my humblest of opinions, a significant factor should be IF *YOU* like the upgrades... for me, I am as big an upgrader, enhancer, tinkerer and messer-arounder with my guns as anyone is -if not more. I am ALWAYS trying to upgrade and enhance and add something to make it better, cooler, better looking, better performing, better feeling, better in my mind etc.
Having said that, I am not a competition shooter nor do I favor anything like that, and the particular upgrades on that Glock don't do it for me. At all. So to me, I wouldn't spend anything extra to acquire a gun that has those upgrades because they're not my cup of tea. But if you do favor them or are into competition or target shooting (serious or more serious than a 'normal' shooter) it might be a great deal to you. Similarly if you feel the gun is great, just looks great and feels great or looks like it's barely ever been used, then jump on it.
A lot and I mean a LOT of used gun buying, pre-owned guns and trades and police-trade-ins and all that stuff, it's not so much if everyone else thinks it's a good deal or if the internet posters all like it, it's if YOU like it, and YOU'RE feeling it or feel it's a good deal. Short of an obviously biased or one-sided trade or downright bamboozle of a price for a used gun, other people aren't really the people who can make the call for you, gotta follow your inside , know what I mean?