Okla. Stat. tit. 12A, § 12A-2-512: Payment by Buyer Before Inspection

Payment by Buyer Before Inspection.

(1) Where the contract requires payment before inspection

nonconformity of the goods does not excuse the buyer from so making

payment unless

(a) the nonconformity appears without inspection; or

(b) despite tender of the required documents the

circumstances would justify injunction against honor

under the provisions of this act (subsection (b) of

Section 5-109 of this title).

(2) Payment pursuant to subsection (1) of this section does not

constitute an acceptance of goods or impair the buyer's right to

inspect or any of his remedies.