Riffe Stubby Wrangler Knife - Saftey Orange/Black

I bought this knife back in January and didn't use it till about a month ago (May). I did two dives with this knife, washing it off with fresh water like the rest of my gear and leaving it out to dry before placing it back in the bag the next day. It's what I've done with all my other dive knives and never experience the amount of rust as I do with this knife. As you can see by the pictures the "Teflon" coating is bubbling and peeling off. The blade itself is rusting badly. To me, this is unacceptable for a knife that costs $86. I have a $30 knife that I've used for almost 5 years that doesn't look nearly as bad. It's a shame that a well-known brand like Riffe is trying to pass this as a top-quality dive knife. I really like the design of the knife with the large handle, rubber grip, and blade length. The bottom line is DO NOT buy this knife!