I just traded in my m7 for the m8 and have a trident kraken a.m.s case that's just laying around and would like to give it to someone who could use it, pretty much you cover the shipping cost and it's yours. Case is in great shape however it doesn't have a screen protector no more, I also have the kickstand for it which wasn't in the pictures.
http://www.tridentcase.com/shop-products/htc-one/kraken-ams-case-htc-one.aspx
http://www.tridentcase.com/shop-products/htc-one/kraken-ams-case-htc-one.aspx