Reoccurring payment plugin help

Hi, I am currently building a website for subscription boxes which will be dispatched every two months. For the site I am using Elementor pro and YouTube tutorials. So far so good 😅

I need a cost effective option for these reoccurring payments but there is a great choice. Can you recommend how to approach this and what to use?

Also, ideally I would like to have the option for each boxes to be bought as part of the subscription or to be a one off purchase which will be at higher price ( for example £75 if you subscribe and 85£ if you purchase a one off) is this something we can accommodate with a plug in?

Thank you, in advance!