I see this comment regularly and I have shown in the past that this is simply NOT the case. More expensive than the UP route, yes.... but not drastically. I have shown before, the EV5U offers quite some savings over separate component comparative.
Look at the cost of the following, all of which the EV5U provides and you will see what I mean....
Jettronic Dual Action Valve x 2 @ 125.00ea
Jettronic Sequencer x 1 @ 80.00ea
Jettronic Brake Valve x 1 @ 80.00 ea
Air Gauges x 2 @36.00 pack
Dual Digital Volt Meter @ 30.00ea
Gear System Failsafe @ 100.00ea
Total - $576.00

Not to mention, the EV5U also contains a Landing Light Controller, 90.00 value?

Comparatively speaking; clearly not the most expensive route!