People grumble endlessly about postage and package on tiny items therefore anyone offering a badge would have to compromise on the item's profit margin hence it wouldn't be worthwhile for anyone to offer it for sale worldwide. A mouse in itself serves a purpose from day one and is a worthwhile investment, a reasonable profit margin can still be achieved and p&p more or less the same as the badge.
No point selling either if you aren't going to make any profit.
