As per another thread, I needed a wide angle lens for one photo for work. I (thought) I had bought one of these: I paid for it and the bloke then emailed me claiming to have found the lens hood and offered to sell it for another tenner. I decided not to take him up on this and thought the way it was done was a little bit odd. However, the lens finally arrived and it's this one: So, what is it, is it any good and how much do they sell for. Which leads to the next question. If it's worth more than the £30 I paid for it, should I return it to the seller or sell it on myself?