My (very) old Tom Tom HOME device is no longer able to accept updates and Tom Tom has sent me an offer to upgrade to a GO 520 or GO 620 device. The offer has a price with the footnote "*based on current 1.5-yr subscription rate." What "subscription rate" is this? Is there a subscription fee for these devices? They're advertised on Amazon as having "lifetime maps".
(And I'm really hoping that these devices are a bit better than the ratings I see on Amazon which I take with a grain of salt lately).