Hello! I'm sorry to hear that you lost your previous Grammarly business supplier. I understand that you are looking for a new supplier to continue your business. However, please note that it is against Grammarly's terms of service to resell or distribute Grammarly accounts. Selling or sharing Grammarly accounts is a violation of their terms of service, and could result in the suspension or termination of the account(s) involved.
If you are looking for a legitimate way to obtain Grammarly business accounts, I suggest contacting their sales team directly through their website. They offer different plans for teams and businesses and they can provide you with the necessary information and pricing.
I hope this information helps you in your search for a new supplier. Good luck!