A commercial seller would be someone who can find the parts in his warehouse....
(Sorry boss - couldn't resist, wheres that RH PZ ramp?)
Anyone bringing a container?
Nino did it last(?) year - even sold a few machines out of the container.
I don't think anyone on here would consider Nino commercial? (Especially given the way he went about it - we all know the motivation was NOT profit)
There are other guys around bringing in a few containers a year - and not with the intention of keeping half the machines either.
These are the blokes the OP is aimed at. (and yes - if you buy in bulk with intentions to re-sell, you are commercial in ANY industry)
NB: I singled Mark and Nino out because I know them - comments apply to anybody in the same boat BTW.