It seems to be another "great deal" from GARMIN's side:

The "old" Transalpin 2012 PRO they are still selling at price 199,00 €,
and the "new" map ("old vine in new bottles") Transalpin v4 PRO they sell at 179,00€ (259 $ in the U.S.).

This is typical GARMIN recycling so far. /kidding OFF