How many sheets are in one packet?

There are 12 sheets to a package

Will this work for embroidering onto t-shirts?

Absolutely! I used it to cross stitch & embroider a baby onsie and bibs. Just print your design on the sheet, stick it to your item & stitch. When done just make wet & sheet dissolves.

If this is old product with non-dissolving glue, why are you still selling it at a premium ? It doesn't even fit in the printer until you cut it down.

I have used STick n Stitch and you dissolve the glue by soaking the project at the end. And the sheets I got in the package were printer-paper sized sheets. Are you sure you asked your question on the correct page?