Hmm... Recently there's an influx of "i240AS"'s on AliExpress going for ~$20-40, with both RJ-45 and SFP variants, would those also be fake?
Example (SFP variant): 26.23US $ 46% OFF|PCI E Optical Fiber Network Card PCI E X1 I210AS Single Port 1000M Ethernet SFP Single Optical Port Server Fiber NIC|Network Cards| - AliExpress
Example (SFP variant): 26.23US $ 46% OFF|PCI E Optical Fiber Network Card PCI E X1 I210AS Single Port 1000M Ethernet SFP Single Optical Port Server Fiber NIC|Network Cards| - AliExpress