Amsterdam Seed Center
€9.50–€16 registeredUntracked standard mail €5.95; FedEx €35 (up to 4 working days).
3–15 working daysRetailer delivery policy ↗GMO Auto
seeds by Barney's Farm
Seedscanner tracks 8 pack listings for GMO Auto by Barney's Farm across 4 independent seed banks serving the US. The best current price is $7.53 per seed; confirm the pack price and availability with the retailer before ordering.
- Pack listings
- 8
- Seed banks
- 4
- Cheapest pack
- $36.96
- Last check
The market at a glance
Where every pack sits
Each dot is one pack listing, placed by its price per seed.
$7.53lowest$13.36highest
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. 7 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 |
|---|---|---|---|---|---|---|---|
 GMO Auto - 5 pack - Feminised - Barney's FarmBarney's Farm · Autoflower | Amsterdam Seed CenterRetailer | 5 seeds | $37.65€9.50–€16 registered | Best value$7.53 | In stock | 1 day ago | Check 5-seed pack ↗Price history |
 GMO Auto SeedsBarney's Farm · Autoflower | Grizzly Seed BankRetailer | 10 seeds | $85.59Signed-for international, rate at checkout | $8.56 | In stock | 12 hours ago | Check 10-seed pack ↗Price history |
 GMO Auto Feminized by Barneys Farm SeedsBarney's Farm · Autoflower | Cannabis Seeds OutletRetailer | 10 seeds | $85.61£9.95 International Signed For | $8.56 | In stock | 8 hours ago | Check 10-seed pack ↗Price history |
| GMO Auto SeedsBarney's Farm · Autoflower | Grizzly Seed BankRetailer | 5 seeds | $49.48Signed-for international, rate at checkout | $9.90 | Out of stock | 12 hours ago | Check 5-seed pack ↗Price history |
 GMO Auto SeedsBarney's Farm · Autoflower |  Herbies HeadshopRetailer | 5 seeds | $51.80$10.00 USPS to the US | $10.36 | In stock | 20 hours ago | Check 5-seed pack ↗Price historySelect this pack on the retailer page |
| GMO Auto SeedsBarney's Farm · Autoflower | Grizzly Seed BankRetailer | 3 seeds | $34.76Signed-for international, rate at checkout | $11.59 | Out of stock | 12 hours ago | Check 3-seed pack ↗Price history |
| GMO Auto SeedsBarney's Farm · Autoflower | Herbies HeadshopRetailer | 3 seeds | $36.96$10.00 USPS to the US | $12.32 | In stock | 20 hours ago | Check 3-seed pack ↗Price historySelect this pack on the retailer page |
| GMO Auto SeedsBarney's Farm · Autoflower | Grizzly Seed BankRetailer | 1 seeds | $13.36Signed-for international, rate at checkout | $13.36 | Out of stock | 12 hours ago | Check 1-seed pack ↗Price history |
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.
Grizzly Seed Bank
Signed-for international, rate at checkoutAll international parcels are sent signed-for.
5–15 working daysRetailer delivery policy ↗Cannabis Seeds Outlet
£9.95 International Signed ForBasic untracked stamp £2.95; International Tracked £11.95.
2–14 daysRetailer delivery policy ↗Herbies Headshop
Published USPS rate at checkoutHerbies quotes a USPS rate for the US in its delivery calculator; free-shipping eligibility is confirmed at checkout.
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.
30-day trend: 8 recorded days — baseline building90-day trend: 8 recorded days — baseline buildingMatches recorded low: €33.60 · first recorded 2026-10-16
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 Barney's Farm 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.