Most of the time, VPN coupon codes are either expired, fake, or locked to specific regions. Nothing is more frustrating than trying to check out with a promo code, only to see “Invalid Code” pop up.

VPN plans look simple until you factor in renewals, bundles, seasonal promos and long-term commitments. Here’s how to understand the true cost of a VPN. Marshall Gunnell is a Tokyo-based tech ...