I don't know how many of you out there have done this, but I have found that when I want something that is normally above what I could pay on the spot, some dealers will work with you on layaways. I try to always put 25% down, and pay everything off early. You would be suprised as to some of the items that people will work with you on.
Many of my nicest coins have come on layaway from a very trusted dealer. Just have to know what you're getting into and read the fine print. I've been satisfied every time and it allows me to buy a $500 coin that I couldn't get otherwise,