I've joined forces with the hobbyDB team to create a database of every Starbucks Mug ever made! You can use hobbyDB to manage your collection and wish list, show it off, find values for your mugs, and to trade, buy and sell. We currently have four volunteers and would love to have more join the team. If you'd like to help, contact the guys at hobbyDB.
Starbucks City Mugs 
I need to have this Czech Republic tumbler for my collection, but it is hard to find even when my friends were there. Need your advice. Thank you very much.
Unfortunately, these tumblers have been discontinued for a while and you can try your luck on ebay or amazon but it may cost a little more…