Underground Comix are known for using different prices, covers (art or color variations) and/or interior content to distinguish between printings.
The Print Mint-
1st print has 1.00 USD cover.
The Print Mint & Last Gasp-
2nd print has 1.50 USD cover
Last Gasp-
3rd print has 2.50 USD cover. 4th print has 2.95 USD cover. 5th print has 4.95 cover.