Another word for bargaining

Powerful bargaining chip to have you here.

It'd make a good bargaining tool for a deal.

Then, it might work as a bargaining chip.

Personal tithes, if not commuted or otherwise still payable, are regulated by a statute of Edward VI., which (except in the case of fishing and tithes for houses in cities and towns, which may be due by custom) restricted them to such persons exercising merchandises, bargaining and selling clothing, handicraft or other art or faculty in such places as had for forty years previously so used to do.

On all these matters bargaining might possibly have reached satisfactory solutions, since there was much to justify Bulgaria's claim in Macedonia.