Contingencies _ The buyer's offer is contingent upon certain keys facts being confirmed. One example may be confirming that the current lease is transferable to the new owner. Also, their willingness to buy is contingent upon the due diligence period confirming that everything you have stated about the business is true.
* The seller can also reply with a pro forma invoice. In fact a pro forma invoice can serve as quote and offer, becoming a more or less binding purchase order upon buyer acceptance and signing. Pro formas are used more in smaller FCL trades, and not in larger bulk trades.