All of the following would be potential bargaining chips for a salesperson during negotiations EXCEPT:

A) price flexibility.
B) training availability.
C) extra services to offer.
D) optional equipment to provide.
E) products available from competitors.

Products available from competitors would not be a bargaining chip for a salesperson, as it would not benefit their position in negotiations. The other options, such as price flexibility, training availability, extra services, and optional equipment, could all potentially benefit the salesperson's negotiating position.