Hi I am new to Prada and I really like the Prada Saffiano cellphone case for the Prada touch cellphone. I don't really wanna go out and buy the whole set (phone , case etc) I just want the phone case. I was on eBay and saw many sellers were selling them less than 30 bucks (15GBP). They all claimed that they have the real stuff and I am not convinced. Can someone help me out? Thank you!