1. Grade and thickness are the product
MR and BWP grades at 6mm through 19mm across standard sheet sizes are all different products at meaningfully different prices. A shop entering them generically cannot trust its stock and will bill the wrong rate regularly. Each combination as its own item is what makes both the invoice and the closing figure mean something, and it makes the reorder list readable.
2. Sheets, square feet and cutting
Ply is bought by the sheet and often quoted by the square foot, and a carpenter buying a mixed order expects both to be right. Hold the conversion on the item so you can sell either way from the same stock. Cutting to size is a service with its own charge and belongs on its own line rather than folded into the rate — that keeps your sheet price comparable to the shop down the road and your labour visible.
3. Storage decides how much you can sell
Sheets stored badly warp, and a warped sheet is scrap rather than stock. They need to be stacked flat on a level surface, kept dry, and handled by two people rather than dragged. Damage in this trade is expensive because the unit is large, and shops that skimp on storage discover the cost slowly through sheets nobody will accept.
4. Carpenter credit and long jobs
Your buyer is usually a carpenter working an interior job with no fixed end date, drawing material over weeks and settling when the owner pays. That is exactly the pattern where credit grows quietly. A limit set at the start, ageing so you can see which jobs have stalled, and deliveries recorded against the site are what keep a large account from becoming a problem account.
5. Brands, and what customers actually recognise
Plywood is one of the more counterfeited categories in the trade, and customers who have been caught once are careful. Carrying recognised brands and being able to show the invoice trail is worth something commercially. Recording brand and grade on your own bill also protects you when a customer later questions what was supplied.
6. What to stock first
The two or three thicknesses that carry most of the local work in a mid-range grade, plus block board and one decorative laminate range if your market uses it. Add depth where customers repeatedly ask for something you did not have. Premium and decorative stock that does not move is expensive here because the sheets are large and the money per sheet is real.