FUG lists 3 prints (all .75), but I suspect that 3rd print might actually be a $1.25 cover price version.
In the Wiki, the scan for the 2nd print is actually the 3rd (or new?) 4th print with a $1.25 cover price.
Actual 2nd (or 3rd?) print with "Revised 1975" on cover.
(https://headcomix.info/forum/proxy.php?request=http%3A%2F%2Fwww.artofcomics.net%2Fpics%2Fa39.JPG&hash=5d4efcc2acd0608dc520a8414a10cbfd79167daf)
See Wiki for $1.25 cover price variant
4th (or 5th?) print with $1.95 cover price?
(https://headcomix.info/forum/proxy.php?request=http%3A%2F%2Fi1.ebayimg.com%2F01%2Fi%2F000%2Fc2%2F44%2Fd9e5_1.JPG&hash=fe43a4a36054f5a6590f05a9077fbb8533d1f746)