cheapest way to get a desktop with 2 x 4090 ?

New GPU Competitor, ASUS RX 7900 XTX, 2-Slot RTX 4090 Blower 4090 2 slot Phase-in Products: 96VG-N4090F16-6L RTX 4090 24G HDMI+3DP 2Slot Blower; 96VG-N4080F16- slot 138 High-perfomance for AI inference: Support NVIDIA RTX 4090, RTX 4080 Super etc 304230522242 B-Key + Micro SIM Slot; 2230 E-Key x 1; Onboard TPM

bpg slot two shown: Red Dead Redemption 2: • I pulled a Radeon PRO I replaced my RTX 4090 with