I think that's his/her point. The manufactured pot would need to be priced higher (to pay for the production equipment over a reasonable depreciation period) in comparison to the hand produced pot that incurs no such overhead to produce, just cheap labor. So in effect, yes, a manufactured pot would be more than a hand produced pot.

I do think the commenter confused the matter by including imported items in the argument.

Given unlimited future earnings, you are right that a manufactured product may be cheaper to produce since there's much less labor cost, but in all practicality I'm not sure it applies.