Buy a peat pot / peat tray

Buy peat pot trays from Jiffy (6 cm)

The tray has 45 pots and are partly connected to each other. Each tray has 45 compartments and the size of 1 compartment is approximately 6x6 cm. The pots are in a single-use tray.

So you buy 1 tray with 45 pots.