I went today - most of the bags are 2.5kg but the salad potatoes have 1.5kg in them.
I bought some second earlies - Maris Piper which had a grand total of 59 in it. Also some desiree - 43 in that pack.
Obviously as they are sold by weight that means some of mine were quite small - is that likely to affect anything?
Woolies have also got a Spear and Jackson 4 tier mini greenhouse at £14.99 - or the shelving on its own for £9.99.