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Honestly, I hadn't even heard of the F2 until your post so I have no idea if the site is reliable or not. At $9.90 it can hardly be considered risky to try it.
I'm from Paris and a french Veteran of the French Army...So, for this price, it's a very fair price for sure, perhaps it's a copy but still a good price !
Look at this link : doursoux.com
a shop in Paris for militaria and a dealer for ELC, the price is far more !!
The F2 in green is not more used since 10 yeras more or less, it's a camo version now.