Best deal: $0.03 per count (65.9% below the median) — ACSTEP #1 Small Coin Envelopes 2-1/4 x 3-1/2, Kraft Mini Key Envelo...
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ACSTEP #1 Small Coin Envelopes 2-1/4 x 3-1/2, Kraft Mini Key Envelopes with Gummed Flap in Brown, Seed Packets Envelopes for Storing Seeds, Tip Envelope for Cash 500pcs
Mead #6-3/4 Envelopes, 3-5/8" x 6-1/2", Security Printed Lining for Privacy, Press-It Seal-It Self Adhesive Closure, White All-Purpose 20-lb Paper Mailing Envelopes, 500 Count (742021)
SUNEE #10 Security-Tinted Self Seal Envelopes – 500 Pack White Windowless Mailing Envelopes, 24LB Printer Friendly for Business, Home & Office Use (4-1/8 x 9-1/2")
Amazon Basics #10 Security Tinted Business Envelopes for Documents and Invoices, Quality Seal, 4-1/8" x 9-1/2", White, Pack of 500
Columbian #10 Security Envelopes, 500 Pack, Self Seal Envelopes for Home, School, and Business Mailings, No Window, 4-1/8 x 9-1/2 Inches, Durable 24 lb White Paper
Columbian #8 5/8 Security Envelopes, 500/Box, Double Window, 3-5/8" x 8-5/8", Release & Seal Self Seal, SimplySafe Tamper Evident, White (COLO156)