No one is going to want to sell their labor in a liberated society. Saying some people will want to still do that is like saying some black people still want to be slaves.
People will only want to deal with you as an equal in a truly free society, and that means your endeavor will have to be collective or solo.
You could sell the product of your labor all you wanted, as a free person why would someone want to stop you from doing that? And nothing other than the fact that no one will want to subject themselves to the position of being an inferior if they didn't absolutely have to would prevent you from selling or buying stuff other people made. Commerce is not the problem, unequal social relations due to class based discrimination is the problem. In a liberated human society if you are willing to treat people as equals, have them manage themselves, and keep the product of their own labor possibly people will join your collective endeavor. If you don't they will simply do something else that is more suited to their interests. Certainly no one is going to sit there furiously putting a single component together over and over again in an assembly line for a pittance.
Please read Kroptkins "Conquest of Bread", it's available online and it explains this stuff in a very easy to read way, and it's not that long.