Which Maps to use on widgets

[fonurr]

Hello everybody,

I've been using (as some of you may know ) Ovi Maps on my widget for Symbian Anna(Nokia E6 etc.),
but it doesn't work correctly (because it is not meant to be used for mobile devices).

So, I want to change the map. So which maps can I use on my widget? (in Symbian Anna)

Besides the basic facilities, what i also need from the map is that I should be able to put more than one markers on it (for example a marker that shows my location) and i need to get the view boundaries of current view state

And what would that map cost to my firm, if we give away this application freely, not sell it.

Thank you very much,
Onur

[fonurr]

I found that google maps and yahoo maps could be used and the examples in this link
Is it really possible to use yahoo maps and google in widgets. I think that they wouldn't work in many cases such as adding markers, navigating through the map vs.
Am I wrong?