Purchased three boxes of 500 plus 1 500 labels; had three labels left over at the end. [In all fairness the same thing happens at [@] too.] It would be better if these boxes were sealed so no one could help themselves to a couple of envelopes. People only using a couple at a time would probably never know.
I am hard pressed to pay such a high differential for #6 envelopes over #10. The ten takes more shelf space uses more material costs more to ship. I think you should check what appears to be wrong pricing.
Used them for sending out to raise funds for the Leukemia and Lymphoma Cup Regatta and it was great not having to lick the envelopes or use a wet sponge. Feel free to make a donation to[@]
Staples has the best 24 lb standard 6-3/4 envelopes for philatelic use. I've tried others but Staples has less jamming. Recently shortened their flap length which also cuts down on jams through printer.