Envelopemall

Definitely the most affordable place to get any kind of envelope you want. They also mail you free samples.

I bought all my paper needs from here. They have a great selection and the best prices I've seen on bulk Stardream products. I will say that their site is harder to navigate than most (more tedious than difficult), and their color swatches for stardream are terrible. I went to other sites, scoped out their swatches to figure what colors I wanted, then placed my order for my chosen products with Envelopemall. Everything arrived in a timely manner and well packaged. If you're going to need a lot of paper, definitely check this place out, because their prices are worth it!

Based out of Chicago. They have great prices. I got my vellum envelopes there