That intel card is just a mPCIe card on an adapter... Like I said, Intel doesn't really make a "real" PCIe wireless card. They just shove their mini cards on an adapter, and off they go.
IMO, $50 and less is cheap for a wireless card.
Ha! I didn't even notice that. I didn't really look at the pics - just kinda skimmed the title and looked at the price.