just do what i do: bookmark that thing and stow it away until you have extra money. B)
i have this gigantic folder in my bookmarks titled "Shopping" and it contains most of my wishlist haha.
i get to go back on it every now and again and buy things. it's a pretty awesome system for me.
I just bought another two amiibo today, and I really dont need amiibo when I have college to pay for. But viva la yolo
This describes most of my eBay purchases.