You are limited to one trial per Brother printer/account.
Additional pages for the plan you signed up for are not included in the free trial and additional overage charges would apply. Sometimes, we may offer you a trial or promotional period, during which you will not be charged a subscription fee for your plan (but any applicable overage charges will still apply). If you do not wish to continue with the plan after the initial or promotional period expires, you must cancel your plan before the end of your trial or promotional period.