Okla. Stat. tit. 12A, § 12A-2-310: Open time for payment or running of credit - Authority

to ship under reservation.

Open Time for Payment or Running of Credit; Authority to Ship

Under Reservation.

Unless otherwise agreed:

(a) payment is due at the time and place at which the buyer is

to receive the goods even though the place of shipment is the place

of delivery; and

(b) if the seller is authorized to send the goods he may ship

them under reservation, and may tender the documents of title, but

the buyer may inspect the goods after their arrival before payment

is due unless such inspection is inconsistent with the terms of the

contract (Section 2-513); and

(c) if delivery is authorized and made by way of documents of

title otherwise than by subsection (b) then payment is due

regardless of where the goods are to be received (i) at the time and

place at which the buyer is to receive delivery of the tangible

documents or (ii) at the time the buyer is to receive delivery of

the electronic documents and at the seller’s place of business or if

none, the seller’s residence; and

(d) where the seller is required or authorized to ship the

goods on credit the credit period runs from the time of shipment but

post-dating the invoice or delaying its dispatch will

correspondingly delay the starting of the credit period.