The waived monthly fee

I seem to recall from other posts that your £30 gets refunded that you initially paid and then you don’t get charged once you are fully approved as a handmade seller after a while. Not sure, but you might need to message them for a refund once approved?
I was initially a Professional Seller prior to handmade coming into existence, so my fees just stopped being charged when my Handmade profile took over and they started offering free monthly fees for Handmade.
All my listings became ‘Handmade’ when I became a Handmade seller, so I would suggest that if you then sell non handmade items in your Handmade account, then you probably would risk being suspended for not selling handmade items if you mixed.
From what I understand when I have read seller central on this, you are allowed 2 accounts provided they are vastly different products, so to me that could mean a Professional Account with the fee for non handmade items and a Handmade Account could be viable, but it doesn’t especially say Handmade vs Professional in seller central - so I would be wary without being sure that you meet the criteria below. “Multiple Selling Accounts on Amazon”
https://sellercentral.amazon.com/gp/help/external/G1801?language=en_US