mainline cell

Why do mainline cell 10mm boilies cost more than 15mm and 18mm and only available between oct and feb, doesn't make sense to me???

At a guess because Mainline dont sell alot of 10mm during the summer months so concentrate their time and effort on the bigger sizes?

if you wanna fish smaller boilies and cant get hold of them in the summer just trim down larger boilies. the irregular shape can also help fool very wary carp who hav been battered on boilies