Jeff writes:

There is no doubt about it that Apollo made some really good avionics, but
pricey as hell.
that SL-30 radio is like $4000+ by its self.

Eastern Avionics has them for $3189. That's considerably cheaper than
getting two plain nav/comms with similar features. Of course they work
a lot better (in normal situations) than two separate units and require
much less space (and power, installation, ...), so it seems like quite
a bargain to me.

--kyler