US mushroom supply vendors, compared
Every vendor we track daily, with cultivation-supply catalog size and representative median prices in two common comparable categories (grow kit and grain spawn) as of September 4, 2026. Vendors are listed by catalog size; no vendor pays for placement.
| Vendor | Supply listings | Species | Categories | Median $/kit | Median $/spawn bag |
|---|---|---|---|---|---|
| Out-Grow | 694 | 28 | 8 | $38.14 | $10.28 |
| North Spore | 398 | 25 | 8 | $29.99 | $29.99 |
Medians cover in-stock listings with a verifiable unit count in that category. A dash means the vendor doesn't currently sell that category. Methodology