OK to answer the OP's question, since no one actually has....
I've financed my 2012 IMac through the Apple website, via Barclays. It's interest free if the balance is paid in 12-18 months depending on amount. So that's what I did. Pretty painless, applied and approved with about 2 minutes of work, and interest free gets my interest any day.
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I have a Ford Contour V6 with 180,000 miles.
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I did the same with Barclays 0% Card (great company and easy website) and got the iMac I really wanted for my photo hobby.
I drive a 1990 Suburban and a 1984 Monte Carlo (getting ready for a re-paint this summer).
I like to save but this isn't a "dress rehearsal"...it's your real life! (Cher)...soooo decide is the act of saving more pleasurable than buying the iMac? THAT is the real question you need to answer for yourself!!