For my neighbors "East of the Border"*, I've finally figured
out the mailing methods and costs.

Quant USD
100 $59.98
200 $94.97
300 $126.87
400 $160.82
500 $189.64
600 $222.56
700 $248.29
800 $271.96
900 $327.52
1000 $358.39

The prices above are in USD and include postage to Canada.
Quantity 800 is certainly the sweet spot, and that is
strictly due to the capacity of the flat-rate envelope. Yes,
the prices are a little odd, but this is a cost-recovery
effort and those numbers are what the spreadsheet kicked out.

These are not the least expensive sleeves you will ever find,
but I don't think you will find a better product. These are
highly transparent, 3mil, seamless sleeves which are suitable
for use on 80x132 cardboard *as well as* 80x140 plastic
mounts. These will be "seamless" sleeves identical to those I
offered in 2012, 2010, and Sam offered in 2007.

--
John Thurston
Juneau, Alaska

* I'm in Alaska. Everyone is east of me :)