I have "volunteered" to hold a plant sale for a local charity. Whilst I have most things organised, I am unsure as to how much to charge. The slight issue is that as it is a group effort, the plants will only arrive on the day of the sale, which doesn't really help me plan.
But as an idea, so far I have black grasses in 9" pots, and hebes, hostas, sedum in 1 litre pots, and some larger lilacs. Any ideas as to how much to charge?