With the exception of limited edition Takara Tomy figures or convention exclusives, it's not hard to get your hands on any brand new figure. Buying multiples of a figure very rarely actually deprives someone else of getting that figure. They are produced in such quantities that you can very easily acquire pretty much any figure.
If you can't find the figure you want at a local retailer there are tons of options open to anyone with an internet connection. I suggest looking at the Ebay listings & Dealer Ads section of this forum to find places that stock the item you are after.