good luck, I randomly put some of these in as free gifts, I don't remember if you got one or not. I can't afford to give everyone a free one it's just the luck of the draw. good luck.
I've been collecting for years. Some I buy on E-bay and Amazon, but a lot of them i win on Listia. Most of my credits I spend buying banknotes from other sellers on Listia. You would be surprised how quick you can build a collection just winning 2 or 3 a week by the end of the year you have several hundred different notes.