sounds like you haven't picked up your pair of Air Mantis sick kicks yet... 

With initials like MJ...Comes great responsibility!  Ninja being one!

As an investor and strictly an investor; my advice would be to dump.  The coins are cool and will always command a premium but as you've seen; the premium is going down with the rise of bitcoin.  I'd buy the coins all day if the cost is reasonable but the cost when translated to FIAT IS absolutely not worth it at present levels.  If you're looking to make money and are not a collector; go with Bitcoin itself.  If you have money to spare and want to buy a physical coin; then by all means buy the CAS.
The core issue is liquidity;  it's going to take a lot longer to find a qualified, safe buyer of your coin than it is to just sell BTC on an exchange.  Just my .02 and that said, I really want to get a Titan because it just looks cool.