My son wants a Retina Mini too. I guess it depends on which store you go to. The Target we went to didn't have any Airs, so we got two $200 gift cards. I used the first one the next day, and am now waiting for Retina Mini to come out.
That being said, we also traded in some iPhone 4s for $100 each (it's in the flyer) and was able to get $179.99 iPhone 5s for only $86.99 (includes the $100 trade-in, 6.25% sales tax on some price and 5% off with Target RedCard).
I realize I could've tried selling them on eBay, but that would've been a lot of hassle, and most other trade-in places were offering a lot less than Target.
The hassle is why I took advantage of the target program.
Went to one targeting Watertown Massachusetts, the line was 32 people deep.
Went to one in Hudson MA, no line but I was only allowed to trade one of the two in. The Worcester store gladly allowed memo radek the two in.
I have been thinking about the mini retina, the difference in size and weight of the air compared to the ipad 4 I am having second thoughts on the mini.