Hey, I've got a science hard case when I bought my Science Fuel Cell from the Vault a month or two ago, and never used it. I'm not sure how the inside got dirty, but it's been sitting in my display. It doesn't match my collection however, and don't feel like keeping it since I keep my Nanowire's in the car 24/7, along with another Carbon Fiber case. I bought these at $22 or so, but I'm just looking for $20 on these, $3 first class mail on top. I have no idea what these are actually worth, but like I said, I got them for 20 at the store. Will be open to trades as well, but rather sell for cash . Let me know if you are interested!