Extra / double quantity selector

New Member
3 0 1

Hi everyone! 


I am creating an option for grab-n-go goodie bags for parents so they don’t have to think and stress for their kid's party. In the product listing, I want a default 1st option of MOQ of 30 bags, and also an Add-on option (a quantity field maybe?) where its +$10 for every quantity they have keyed.


Does anyone know of any plugin apps that could do that? or have any samples of websites that are also doing this? would be lovely, thank you!