I'm not really thrilled about it being for a specific phone that is likely to have a physical form factor not guaranteed to have any particular lifetime.
Even with that... the non-iphone versions they previously sold were thousands of dollars. This is a huge leap in affordability even if you have to buy an old iphone 5 to go with it. For instance, the E4 they sell is $1000 and up.
Fine. I bought it. It's amazing.