Well I'm from Belgium, let's start with that and I'm 23 years old.
Bandai has stopped selling tamas around here for years and years now.
But they still sold some in the UK, but after a few years that stopped as well. They weren't very popular anymore.
The last one they brought out in the USA was the Tama-go, but that hasn't lived up to their expectations. So that's one of the reasons why you can't buy tamas there either.
I heard that you can sometimes find them in old toy stores and such if you search very, very good.
Girl, if you want some, i would recommend to buy them online via ebay and use paypal to pay for it.
If you don't get the item, paypal can always return you your money. Even ebay helps you to get your money back in some way.
Also check the feedback that the sellers are getting, if it's bad, don't buy with them.
Sorry if I'm going off topic with this. If you want any more information about this, maybe you should start a new topic and ask all your questions there