This offer, extended in conjunction with two offers with up-front payment, lets you remain focused on your top priority, while showing the other side the tradeoffs required for extended payment terms.

I've just received instructions from our home office. Your payment terms are acceptable to us, but the new quotation, they think, is still on the high side.

However, if a owner USES the side payment mechanism depends on the value of the design and compensation and punishment coefficients.