Oh you get them from supermarkets!!
No, usually supermarkets do not carry African mangos. You can order it on the internet, however.
beans
Most supermarkets carry at least one brand of brie. Higher end markets and specialty stores should carry more varieties and flavors of brie and other cheeses.
Tinned broad beans are widely available, they can be bought from most supermarkets, larger grocery shops and on line grocers.
I know you can buy beans in a local supermarket
It can be hard to come across but some supermarkets do carry gluten free. Your best bet is to check at your supermarkets if there is no luck you should probably try a specialty store.
To wake you up!
Pet stores have them and some supermarkets also carry those products.
Dee-Lucks
Brazil coffee bean samples can be found on the internet at websites such as TrueLocal and Coffee Beans Shop. You could also try large supermarkets as they sometimes have samples.
Most supermarkets and grocery stores, and some convience stores, will carry them to be bought.