Sorry I fell over laughing when I saw the prices on your websiteJet Letter's PSL Page Builder Pro can generate labels for most any type of format. Sheet fed or roll. Most any size sheet. The software can generate barcodes. Merge records at high speed to accommodate more demanding needs.
www.jetletter.net
Full disclosure, I am associated with Jet Letter.
I know bartender can use variable data csv files to generate barcodes etc but it only works for rolls of labels as far as I can see.
Is there anything similar that can output to multiple labels on a sheet?