Spock,
I had the same problem with giving advice to Ron (Penguin stamps)
It is easy to recommend the quality of a product
when it is in defect, another thing to give a product
the thumbs up.
I am not really qualified to recommend the product I use
because it is quoted as archival, I have done the beilstein test
and just cross my fingers that it is.
We have a company in Australia called very strangely BUNZL
who sell archival pockets really cheaply about a half cent each,
or 1c each IIRC.
I reckon they are the ants pants, and put all my covers in them
but they have two drawbacks, they have no "body" like glassine
and will not stand up in a shoebox, and they are extremely "slippery"
but for storing odd stamps or duplicates etc they are fine.
All this really is no use to you, as you will have to
shop around as I did.
I went to the Western Australian State Archives and annoyed them there, and they recomended the company to me.
You may have to do the same in your country.
Google is a start.
Hope this is of some help
update: prices have gone up
I found this pic I snuck when I was in the warehouse
they are 5c each, but I think the smaller pockets are cheaper
I like the size of a long cover or the size of a cigarette packet for my stamps.
