Deal guides
Research-first guides to promo codes worth trying, by category. Every code's sourcing is stated, and nothing is called verified until it passes a real checkout test.
- Mattress promo codes, August 2026
Helix, Casper, Purple, Nectar, and why most mattress “deals” need no code at all.
- Eyewear promo codes, August 2026
GlassesUSA, Zenni, EyeBuyDirect: big first-order discounts, and one brand to stop hunting codes for.
- Pet supplies promo codes, August 2026
Chewy's standing $20 eGift offer, PetSmart pickup codes, and the auto-apply trap at Petco.
- DTC apparel promo codes, August 2026
Rothy's, Bombas, Vuori, Allbirds and friends: where the welcome code lives and what it's worth.
How Discoball labels codes. A code is marked Verified only after a logged, real-checkout test: by us or by an AI agent reporting back through the API. Everything else says Unverified, including every code on this page right now. We update these guides as verification results land.