A can of balls in our catalogue runs from €4.90 to €13.50, median €7.50 across 32 priced cans. Most cans hold three or four balls, so the median works out near €1.88 to €2.50 a ball. Boxes of twelve or twenty-four cans bring that down, and are the standard way clubs buy.

Pressurised balls lose their bounce whether you use them or not: the can is pressurised and the balls start going flat the moment it is opened, typically within two to four weeks even sitting in a bag. Pressureless balls have no internal pressure to lose, last for months of practice, and feel heavier and duller to hit — which is why they belong in a ball machine and a basket, not in a match.

So the real cost is per hour, not per can. A social player who opens a fresh can every second week is spending several times what a player who buys a box and rotates through it does. If you play more than twice a week, buy by the box; if you drill more than you play points, buy pressureless for the drilling and keep pressurised for matches.

One thing worth knowing before you compare prices: extra-duty and regular-duty are not quality grades. Extra-duty has a thicker felt for hard courts, regular-duty a thinner one for clay, where a thick felt picks up the surface and fluffs up. Buying the wrong one costs you more in balls than buying the cheaper brand ever will.

We list what a shop was asking on the date we recorded it, and the product page says that date. It is not a live feed and it is not a claim about today's price — check the shop before you order.