I got a little confused by your post. Let me see if I understand you. You are paying .34 - .80 for postage when others are paying .45 for the same thing???

I also see a variation in the price of postage coming on my chips that I receive. I see prices range from, I think .45 to about .75 (estimated). The only thing that I can see is that some do vary in the sizes of envelopes that are being used. Some are using small bubble mailers that are about est. 4 x 5 and others are sending in envelopes that are 5 x 8? I would think that the amount of postage could vary just due to the size of the envelopes. Also, some people just put the chip in an envelope. I had one guy throw in a bunch of swizzle sticks as freebies and others sending me slot cards. Sometimes the freebies and a larger envelope could be what throws the price into another range.

Just a couple thoughts.