I have 195 plain white 6 x 9 envelopes. They are a smooth texture but heavier than what you would typically get at an office supply store. The envelopes can also be used as an outer envelope for A9 size inner envelopes.
I will take $25 for all but if you need a smaller quantity just let me know. I would prefer pick-up (am in Plymouth Meeting/Blue Bell area) but I maybe able to fit them in a flat rate box for shipping.