I've ordered several times from
ClearBags - Promote, Protect and Preserve, and have always gotten great service.
I usually get the Mohawk white and cream (#EF20 and #EF21) in multiples of 250 to get the best price. Love the straight edge on the flap!
I'm also currently making my son's wedding invitations, and ordered the invitation and rsvp envelopes here too. Ordering several items at once is a good idea, since they have a small order fee if the total is less than $40.
Mary