Grizzly Seed Bank
Signed-for international, rate at checkoutAll international parcels are sent signed-for.
5–15 working daysRetailer delivery policy ↗Masszar Auto
seeds by Critical Mass Collective
Seedscanner tracks 8 pack listings for Masszar Auto by Critical Mass Collective across 2 independent seed banks serving the US. The best current price is $8.48 per seed; confirm the pack price and availability with the retailer before ordering.
- Pack listings
- 8
- Seed banks
- 2
- Cheapest pack
- $13.24
- Last check
The market at a glance
Where every pack sits
Each dot is one pack listing, placed by its price per seed.
$8.48lowest$15.15highest
Best value In stock Out of stock Older price
Best price by pack size
Bigger packs, lower unit cost?
Pack-by-pack comparison
Compare the real cost per seed
Current prices come first, cheapest per seed at the top. 8 of 8 listings were checked in the past 24 hours.
8 pack offers
| Seed listing | Seed bank | Pack | Pack price | Per seed | Stock | Checked | Retailer link |
|---|---|---|---|---|---|---|---|
 Auto MASSzar SeedsCritical Mass Collective · Autoflower | Grizzly Seed BankRetailer | 10 seeds | $84.82Signed-for international, rate at checkout | Best value$8.48 | In stock | 4 hours ago | Check 10-seed pack ↗Price history |
| Auto MASSzar SeedsCritical Mass Collective · Autoflower | Grizzly Seed BankRetailer | 5 seeds | $46.38Signed-for international, rate at checkout | $9.28 | In stock | 4 hours ago | Check 5-seed pack ↗Price history |
 Auto MasszarCritical Mass Collective · Autoflower |  Gorilla Cannabis SeedsRetailer | 10 seeds | $101.11International rate at checkout | $10.11 | In stock | 12 hours ago | Check 10-seed pack ↗Price historySelect this pack on the retailer page |
| Auto MASSzar SeedsCritical Mass Collective · Autoflower | Grizzly Seed BankRetailer | 3 seeds | $30.47Signed-for international, rate at checkout | $10.16 | In stock | 4 hours ago | Check 3-seed pack ↗Price history |
| Auto MasszarCritical Mass Collective · Autoflower | Gorilla Cannabis SeedsRetailer | 5 seeds | $55.61International rate at checkout | $11.12 | In stock | 12 hours ago | Check 5-seed pack ↗Price historySelect this pack on the retailer page |
| Auto MasszarCritical Mass Collective · Autoflower | Gorilla Cannabis SeedsRetailer | 3 seeds | $35.38International rate at checkout | $11.79 | In stock | 12 hours ago | Check 3-seed pack ↗Price historySelect this pack on the retailer page |
| Auto MASSzar SeedsCritical Mass Collective · Autoflower | Grizzly Seed BankRetailer | 1 seeds | $13.24Signed-for international, rate at checkout | $13.24 | In stock | 4 hours ago | Check 1-seed pack ↗Price history |
| Auto MasszarCritical Mass Collective · Autoflower | Gorilla Cannabis SeedsRetailer | 1 seeds | $15.15International rate at checkout | $15.15 | In stock | 12 hours ago | Check 1-seed pack ↗Price historySelect this pack on the retailer page |
No offers match these filters.
Pack prices exclude delivery and tax, and bonus seeds are not counted in the per-seed price. Some retailers open their product page on the smallest pack, so pick the pack shown here before comparing. Opening this page does not recheck a price.
Delivery to the United States
What it costs to get them home
Taken from each retailer’s own delivery policy, checked 15 Oct. Pack prices exclude delivery and tax; the retailer’s checkout is final.
Gorilla Cannabis Seeds
International rate at checkoutGorilla publishes UK rates only; the international rate is shown once the US address is entered.
Retailer delivery policy ↗Price history, not guesswork
Is now a good time to buy?
The recorded price of one exact pack at one retailer, in the retailer’s own currency. No mixing of pack sizes, shops or exchange rates.
At the 30-day recorded average90-day trend: 27 recorded days — baseline buildingMatches recorded low: £63.99 · first recorded 2026-10-12
One pack · original retailer currency
Trend averages use the last recorded price per UTC day and need at least 80% daily coverage across the period. Missing days are never invented.
Seed Science · video + article
Know what you are growing
One breeder, one type
Only Critical Mass Collective Autoflower listings appear here, so a reused strain name from another breeder never sneaks in.
Price per seed
A bigger pack can cost more at checkout and still be the better buy. Every pack is reduced to the same unit.
Dated evidence
Every price shows when we last saw it. Older prices stay visible and labelled, and never lead the page.