iPad Upgrade Opportunity

Note: all prices below are for wi-fi only models.

You can buy one of the fancy new iPad Air 2s at $600 for the 64GB model (the cheaper 16GB model has too little storage to be viable).

Or you can buy last year's model for $450, with a barely adequate 32GB (Apple no longer sells a 64GB version). (Here's a handy guide to all prices of all options).

Or you can buy last year's model, with a full 64GB, second-hand on eBay for $550-600 (wuuuh???).

So what I don't understand is this: why would anyone in the market not buy a 64GB refurbished iPad Air from Apple for $439, with full warranty? You save $161 over the newer model (touch i.d. is cool, but not $161 cool). You save a few bucks over the previous model with half the storage, and you're beating even scuzzy eBay prices by miles.