ESC/P and ESC/P2 are not related to ESC/POS, you cannot use QPCPrint if you want to print ESC/POS data. Please always use the demo first to see if QPCPrint works for you. If not your data is probably not in ESC/P format.
A single QPCPrint license costs 79,90 EUR plus postage.
Private users may use the license on up to 4 PCs and with up to 4 printers.
Business customers need to purchase a license per workstation that has access to QPCPrint. This includes having access to a print server that uses QPCPrint for its output. Please inquire for volume discounts.