Check out Staples.com where they have security envelopes on sale for just $3.00, down from the regular price of $7.79! Prefer regular envelopes? Grab some of those too. Choose to have them shipped to the store for free, or sign up for the Staples Rewards program. All orders ship for free for Staples Rewards members. It’s free and easy to sign up.

Buy 1 Staples #6 QuickStrip Security Tint Envelopes, 100 ct (reg $7.49) $3.00
Buy 1 Staples #10 QuickStrip Envelopes, 100 ct (reg $7.79) $3.00
Free Ship to Store
Final Price: $6.00