Public Figure page with 500K - is mine!!

Hello people,

Some months ago I've acquired a part as admin of a public figure page that now has 500k, I've managed to get around 100k fans to join but now I'm looking to know the value of it, as I'm planning to work on other "projects".
Would you guys be kind enough to tell me how much is the page actually worth?

Thanks in advance, good luck!

with or w/o pub. rights ?
have you ever used this page for advertising purposes ?
how many US/UK/CA/AU based fans ?

With pub. rights, majority of the people is from Europe, although the Us have 11k and the Uk - 35k...

And yes, I've used to advertise a couple of times, around 5...however there's ~1k new fans everyday...
Hope this info helps to determine the value!
Thanks

Come on People, Cant' you give me a ballpark about this please?

Thanks!