Terms of Payment. Unless otherwise agreed in writing by the parties, all invoices are payable within thirty (30) days of the invoice date. Where Goods are delivered by installments, Seller may invoice each installment separately and Buyer shall pay such invoices in accordance herewith. Invoices not paid in accordance with terms are subject to interest charges at the rate of one and one-half percent (1.5%) per month, unless prohibited by law, in which event invoices will be subject to interest charges at the maximum legal rate. No dispute arising under the Contract nor delays beyond the reasonable control of Seller shall interfere with Buyer’s prompt payment in full of any invoice. Time and terms of payment are essential hereto, and if any default therein be made by Buyer, or if the financial responsibility of Buyer shall at any time become impaired or unsatisfactory to Seller, Seller will have the right to terminate without notice or to defer or discontinue further services hereunder until past due payments are made or satisfactory assurance of Buyer’s financial responsibility is received by Seller (without prejudice, however, to any claims or rights which Seller may have in law or equity hereunder). Such right will continue irrespective of any prior failure on the part of Seller to exercise such right. If Seller is required to refer any order to an attorney for collection, Buyer agrees that all costs, attorney fees, and expenses of said collection shall be added to the amount due Seller from Buyer.