I agree with the posts above that its important to have both business and interpersonal skills, but I believe its essential to have interpersonal skills to get deals done. Sales is all about not just getting a deal done, but relationships. As seen with this week’s simulation, you want to not just make one deal, you want to have and maintain a good relationship with your customers so that continue to purchase your products. There’s a great book called “Getting to Yes: Negotiating an Agreement without Giving In” by Roger Fisher and William Ury which I highly recommend if you’re looking to obtain some negotiation strategies.