I just took delivery on 2000 2.5's
The supplier is B&Lprairiecoin@accesscomm.ca.
The cut/crease is very good, the window is 1.75", the card is 2.5" and the price was excellent. $3/1000 for the 2000 quantity. I believe that $3.50 is the price for smaller lots.
Also have used WWW.JPSCORNER.COM. They are a full line supplier for everything including airtights. Their web site gives you the full picture
Trust this is of help