50/50 domestic commercial, made my own backpack, trolley and van mount.
I would suggest that anyone get a wfp to save their live. Dont expect to make big bucks, just that you cannot fall off a pole.
I use small 7amp batteries so a golf one should be ok to start with.
Many will hope to expand into the commercial market but maybe too late as all the established firms have the custom covered, so all thats left is to undercut. Or to concentrate on your own customers.