Sports Cards in the Treasure Valley Nampa, Boise & Beyond
Grand Slam Sports Cards is the Treasure Valley's local destination for sports cards, hobby boxes, graded singles, and sealed wax. Located in Nampa, we're a short drive from Boise, Meridian, Caldwell, and Eagle — and we're an official Fanatics dealer carrying the latest releases from Topps, Bowman, Panini, and more.
Whether you're a seasoned collector or just getting into the hobby, we have something for every budget and every sport.
What We Carry
Our inventory rotates regularly with new product hitting the shelves weekly. Current inventory includes:
Football — Topps Chrome, Panini Prizm, Select, Donruss, Contenders
Baseball — Topps Chrome, Topps Series 1 & 2, Bowman Chrome, Stadium Club
Basketball — Panini Prizm, Select, Hoops, Mosaic, Optic
Hockey — Upper Deck Series, O-Pee-Chee Platinum
Plus hobby boxes, blaster boxes, retail packs, Elite Trainer Boxes, raw singles, and PSA/BGS/SGC graded slabs.
Can't find what you're looking for? Call us at (208) 546-0075 or follow @grand_slam_idaho on Instagram — we post new inventory as it arrives.
Why Collectors Choose Grand Slam Sports Cards
✔ Large selection of Topps and Panini hobby boxes
✔ New releases and restocks weekly
✔ Local shop serving the entire Treasure Valley
✔ Friendly environment for beginners and advanced collectors
✔ Singles, sealed packs, and collectible cards available
✔ Community-focused shop with events and trade nights
Sports cards from manufacturers like Topps and Panini remain among the most sought-after collectibles, with limited runs and specialty inserts increasing their rarity and value.
We offer cards from major sports including:
Football
Baseball
Basketball