Ammo was never much an issue back then--but, in some fairness, DoD was not buying 1500 million rounds a year, either; DHS did not then exist, with their purchases furhter depleting production, too.
Lake City Match ammo went from 25-50¢ per round to 60-75¢ ($1 each for Cal..30 173gr FMJBT Match at the very end of that decade).
$5 magazines went to $15 pretty quickly. Then, to $25, $30, and $40-50, depending upon the type and time.
It was a stupid time in many ways. It was far easier to get those clunky 27-30 round Glock mags than to get 17-19 round standard capacity ones. Drop-free reduced capacity Glock mags were as hard (or expensive) to find as standard-cap ones.
AROTC changed their inventory, so it was a buyer's market for good Mossberg M-44s, but not for the (unbanned) magazines for those (which are still around $49.95 even today).
Oddest scarcity was in links for M-60 MGs. BATF amd Sarco went back and forth for 5 years on how to make compliant "ammunition feeding devices" whihc pretty much put production on hold for a while. This was very odd.