Gear and comparisons
What to compare before you buy, and what this site will not pretend to know.
The only published comparison today is kit versus DIY costs. It separates a one-time tray from seed you buy again, and it shows a dated university price snapshot next to a recalculation. It does not name a current retailer.
Three ways to count money
- Checkout spend. What you pay now for whole packs and equipment.
- Consumed cost. The slice of seed or mix one sowing actually uses.
- Equipment spread over many trays. Optional. Only useful if you state how many times you expect to reuse the tray or lamp.
A large bag can be cheap per tray and still cost more at the register than a kit. Both facts matter. The calculator can show consumed cost from a price per pound, or checkout spend from a package price and a package weight that you type in.
What is not here yet
There is no live product card, no current merchant price, and no affiliate link. A tray's real outer size, inner growing floor, and whether it nests in a reservoir have not been measured for this site. Those checks are listed for the owner before any shopping module goes up.
Until then, use what you already have if it is food-safe, clean, and drained: a takeout container with holes, set in a solid tray. Francesco Di Gioia at Penn State Extension describes that option for home growing. It is a valid setup, not a lesser one.