First one I got off eBay cheap.
Second came by way of a small inheritance.
Acquired an upright arcade by means of cashed in vacation time.
Another pin came by way of a tax refund.
AND the last one I got was a product of some shrewd sales on ebay of unwanted but collectable items combined with some savings.
All this and I am a janitor with an average salary.
Get creative.
If 'ya want 'em, find a way.