Need to upgrade email beyond 50 users


New Email
Right now the company I work for has 50 free email accounts from Google (Gsuite). We have had the 50 free gmail emails under our own domain for quite a while. We are looking to transition to paid email but going from free to $9 per user per month seems steep. Any suggestions to ease pain and switch to a paid platform? We have exceeded our need beyond 50 emails.