I wanted to have weather in my M20J for long trips but did not want to spend the money it would take to have it displayed on my 530.
I have a Garmin 376 that I use in my boat and car and the weather package for it is still $29.99. It gives the same information for the Fisherman Package as the Aviator LT package except for TFRs Metars and TAF.
On long trips, I just load the GPS coordinates of the Airports as waypoints and then prepare a route. This gives me the weather pictorial for my flight and saved me the additional cost of aviation weather.
Also, land and water GPS units are significantly less than the 396 or 496 and if you already have IFR GPS units in your plane, its a good way to add weather only.
Jerry