e97e341c_ting_business___Small_Business__Advantages
[0] Supplier relationships [Disadvantages] There may be supplier relationships that are not so good, or key suppliers that have had bad experiences with the business in the past and therefore offer worse credit terms than they would offer to a start-up. Or suppliers offering good terms might want to re-negotiate on the change of ownership. [Advantages] 
You could get the advantage of favourable credit terms from suppliers who have a long-standing relationship with the business. In addition, suppliers may have a good understanding of the specifications for goods supplied and the other needs of the business.
Advantages and disadvantages of buying an existing business - Small Business
Advantages