There's a few varieties. The AKS74U, the Bulgarians have made a variety of krinks in the 74U style in various calibers, the Yugoslavians have their underfolding M92, then there's the Draco.
The Draco isn't really a "krink" because it uses a standard AKM dust cover and rear sight base assembly. A hinged dust cover with rear sight on the cover is one of the defining features of a krinkov.
Ahhhh okay, now I know what to look for. Those features and the distinctly different front sight/gas block.
Availability and cool factor. Dracos are relatively new production new import Romanian firearms while true AKS74U kits are rare, expensive when found, and have a high collectability factor with enthusiasts. Technically, the name "Krinkov" itself stirs a lot of controversy. Neither the Russians nor the Bulgarians call it that. Common internet lore says that the term was developed during the Soviet invasion of Afghanistan but there is no official proof of this. Even still, "Krinkovs" only referred to the the original and very distinct Soviet and Bulgarian AKS74U, but now it seems that any short barreled AKM or AK 74 derivative falls into that category as TheRedHorseman mentioned.
I think one factor in its notoriety is that it was one of the firearms that bin Laden was always seen with in his pics and videos.
The recent barrel ban makes an original kit with barrel even more desirable. A Draco is simply a run of the mill Romanian AIM (Romanian for AKM), in a useless pistol form, but at the very least is cheaper overall to SBR. I would say get the Draco if you just want to have a short AK. A "Krink" is definitely spendy and is more for the collector crowd.
It's like many other firearms in this hobby of ours, availability and dumb ass laws drive prices moreso than quality sometimes.
Outstanding! Thank you very much for the detail, I appreciate it! ...and yes, I will be getting a Draco. Why not, right?