Price items . Also for each store.

Able to put the price of each item , add the stores where they usually shop 
and put the item price  (manually or lower a shared database ) and thus to make 
the shopping list to choose which store you go to make that purchase and you 
calculate what it will cost you about .
It also would be nice to add photos to articles, scan barcodes ... 
and that these data to board a public database to download data items , prices , 
and so if you reinstall the application or change platform also able to download 
all your data stored in the cloud ...