I've never seen a "graded" note pack before: http://goo.gl/oFVLP It isn't graded -- It is encapsulated by PMG.
I've seen packs of 100 $1 SC's before, but not encapsulated. That's a heavy duty premium ($13.00 per note) to pay for the "cool" factor.
Allllll here we goooo with the plastic fantastic end alls.... I notice they are not technically graded, but verified if anything... Ok OK OK now were going to have pictures and first day issues, and coinvault hommies going gaga for kokopuffs. "FIRST DAY ISSUE GEM B.U.! TUESDAY TWO-SUM SUPER AWESOME RARE 2009 FEDERAL RESERVE NOTE!" They only made 500,000,000,000 of these, so you will not see them anywhere else but on CoinVault! This one in 65 and is only $129.99, and we have only a few in 66 for $199.99 get before your neighbors do! In my humble opinion, this is a gimmick at the highest level... Here's my power pack of $1's!!!
I suppose the encapsulation will protect the corners of notes in the pack but what do they charge for encapsulation without grading? It would have to be cheap just for the protection because when the time comes to sell it how does the buyer know if the notes would average 62 or 65s without cutting them out? If you were buying the pack what grade would you assume the notes are? I'd think most would assume lower not higher.
I don't think you would want to add a desiccant to notes in a container — You would probably dry the note too much. I believe approximate 40-50% relative humidity is what you want for archival storage.
