Originally Posted by hgerhardt
If you have a G3X, you only need the Nav data for the GTN, which is $299/yr. The $149/yr for the G3X has all the databases that you would have redundantly had in a full-bundle GTN subscription. So total it's $450/yr.
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Thanks hgerhardt, that's a good tip and puts your full suite at $450yr including IFR navigator.
If you don't fly IFR, all you need is the $149 for the G3X to include everything in the $99 Seattle Avionics setup.
The $299 or $499 subscription for the GTN would also be required if you had Dynon screens. Avidyne has a similar setup for similar pricing if you have an Avidyne instead of a GTN.