I guess it's possible I got a really good deal! I got a late 2011-model from ebay around this time last year (so May 2013), which turned out to be new in the box (but I wouldn't have minded a refurb), for $1199 plus tax.

I guess you're right that PCs retain their value even worse, but even $2000 to $1300 in a bit more than a year seems like a good deal.