From Navigadget
In case you are wondering Nokia Maps are free to download but if
you want voice guided navigation you will have to pay some
money. For only one day it’ll cost you 6,49 €, one month will cost
you 8 €, a whole month for 60 €, and a whole year for 70 €.
So if u dnt use tha't u wnt need subscription.I have an HTC
Artemis with a GPS chip and I use Tomtom with it.It's free.Try to
see if you can get a Tomtom for symbian.