What does this cost to the nearest dollar?

Title: ONETAK 240V NEMA 14-30P to NEMA 6-50R Power Cord Adapter  
Category: Electronics  
Brand: ONETAK  
Description: A 240‑volt, 30‑amp adapter converting a NEMA 14‑30P plug to a NEMA 6‑50R receptacle for high‑power equipment.  
Details: Features high‑quality copper conductors, UL listed, and a secure 4‑prong male to 3‑prong female connection suitable for

Price is $