NX500 still worth it in 2020?

krloz, looks like a good deal to me. Even though only "freaks" are using NX system today, the image quality of NX500/NX1 is still excellent as of 2020.

The fact the NX system is "not wanted" due to its discontinuation is an advantage one should use - to get high quality camera/glass at a decent price. I've used many NX bodies in recent years, not one issue so far.

My favorite lens is 30/F2 by far, such a gem. The rare lenses (10mm, 85, 50-150S) are sometimes available at ebay, you just need to be patient to find a glass at (almost) new condition.

Original Samsung batteries are still available, specifically from Korean markets.

12-24mm had metal mount, but was not fastened well enough so the mount tended to break (too short mount screws, too little number of screws - just a major engineering fault).

Today there are many cameras outperforming the NX500/NX1, but hey the NX cameras were released more than five years ago. Side by side the picture quality is still one of the top players in APS-C pool.

I also love the feeling shooting with Samsung camera - no one even knows Samsung has ever made cameras even though Samsung is more known its flat-screen devices and smartphones, the camera is a rare technical weirdo, maybe like Sigma or Ricoh.

I currently do have NX1, second time. I had it before and sold it thinking the Canons and Nikons and Fujis are better. Turned back to NX1 and currently cannot see a replacement for it in the next following years. Oh, Fuji's glass is of course a class of its own.

Never used a 85/1.4 (in my wishlist), but reading the previous replies it seems like a serious, professional portrait lens. At the price you mentioned, it should be a good buy.

Do not bother with 20-50mm, the glass is below the NX primes and 2.8 zooms.

I hope this helps!