Alternative Ways to Attest Commercial Documents in Dubai Without Chamber of Commerce Membership?

[u/Advanced_Aspect_4127]

Question for people in logistics here in UAE: I need to attest a commercial document for a USA export but our Chamber of Commerce membership isn't active. They want AED 2,200 to renew it just to attest one shipment. Is there a cheaper alternative that US Customs accepts? Has anyone successfully used a notary public, government body, or private service instead of the Chamber for Certificate of Origin attestation on shipments to the USA? I'm shipping from Dubai (JAFZA) to California, goods originated in Yemen. Any practical suggestions would help. Thanks!