I tried that - didn't work.
A couple years ago, before I was aware of this board, a seller who is a member here, refused to combine shipping.
So I requested that he send the chips in separate packages.
He refused, sent all the chips in one package, and charged me for separate shipping.
I gave him negative feedback, and he actually had the nerve to complain about the negative feedback on this board.
To this day I still consider him a thief.