Was it on sale? If so you can take the amount you saved, subtract it from the amount you spent and see how much you really spent. I once needed a winter coat. I found a fabric one that I liked for $178 and a leather one that was on sale for 50% off at $199. Okay, if it's 50% off that makes me saving the same amount that I spent so it's free. Then add in the $178 that I didn't spend by not buying the fabric coat and I actually made $178 minus the taxes on the $199. So I made about $160 and had a new leather coat!!!
it's okay, DH didn't buy into my way of figuring either.