If you were planning on trade-waiting for Uncanny Avengers, I'd recommend against it
unless you want to pay more than the individual issues will cost.
Except that Amazon's 34% off isn't the best you can find, only the biggest name. Probably why they used them as an example.
InStockTrades will have it for 40% off minimum.
CheapGraphicNovels has been doing 50% off for first week release since summer, we'll see how long that continues.
I'll wait, don't feel it's a bad hedge bet.