pronouns

[navit]

Can one use:

1) I grow my own potatoes. Why should I buy them from you?
instead of:
2) I grow my own potatoes. Why should I buy potatoes from you.

Can one use:
3) We produce our own milk. Why should we buy it from you?
instead of:
4) We produce our own milk. Why should we buy milk from you?

Gratefully,
Navi

[Alan]

(Not a grammar issue but...) Yes, they could reasonably bear that interpretation.