very fishy, but for $8.99 only with eBay Money Back Guarantee, i gave it a shot even i don't expect it will ship. the funny thing is only can order 1 at a time and the available number stays at 3 even after i ordered one. buy it on your own risk.
Intel chipsets x540-T2 10G PCI-Express dual RJ45 ports Network Adapter | eBay
Intel chipsets x540-T2 10G PCI-Express dual RJ45 ports Network Adapter | eBay