Ebay offers Samsung Galaxy S24 Ultra 512GB S928U Unlocked Refurbished for $585.99 (reg. $1,419.99) with free shipping. 

Product Description:
Experience the ultimate in smartphone technology with the Samsung Galaxy S24 Ultra. Enjoy breathtaking clarity with its cutting-edge display, unparalleled power with its advanced processor, and professional-grade photos with its state-of-the-art camera system. The Galaxy S24 Ultra redefines what a smartphone can do.