Prices are definitely dropping, but $600 seems like a stretch. I searched for “rtx 3090”, checked “used” only, sold items, only auctions. Last 5 sold were $715,

Prices are definitely dropping, but $600 seems like a stretch. I searched for “rtx 3090”, checked “used” only, sold items, only auctions. Last 5 sold were $715, $812, $840, $760, $870 (I skipped a few outliers that were actually 3090 Ti).