Adding "PRINT PDF" button along with "PRINT NOW" & "PRINT LATER" will be helpful for someone like me who needs to print hardcopy or softcopy randomly anytime.
You can do this already, just choose a PDF printer, most windows programs already come with a PDF printer installed, if not, just get CUTEPDF its an excellent free program. I don't think it would be a good use of shippingeasy resources to try and have them re-invent something that is already standard.