Yeah, "Missed Deals" they're legion. Although just coming of age right at 18 in '91, when the import bans hit, and 21 in '93 right before the AWB, a lot of stuff got cheaper in terms of make and when I revisited some things again in '04, or bought AWB neutered stuff that was cheap when nobody wanted it, and could restore it with muzzle devices, or pistol grip stocks later.
Some I can think of...
MAS 49/56, even despite the 7.5 French ammo, was a rifle on par in terms of construction with an M14, and would probably cost $2000 to produce it commercially, for only around $250 at the time, even lower at their peak.
Every year that I dither on an M1 Garand...
Horrid pistol, but a decent conversation piece. I had a shot at a HK VP70z for only $300.
A Steyr SSP (semi stockless pistol version of the TMP SMG) for only $600. Now B&T is selling them through DSA for $1200+.
I've missed out on the $90 Nagant revolvers, when cheap .32 conversion cylinders were only $50.
There's a few things I am proud I got in on though, which greatly lessens the sting.
I got an FR-8 for only $125, on the smaller second imported lot.
Ishapore 2A's (MkIII SMLE's in 7.62 Nato) for $100.
The Romanian .22 training rifle for only $59.
A Saiga S12 for only $500 last November, before all the madness over the past month, and the supply dried up, possibly forever.
Draco AK pistol for only $300 last spring.