Haven't seen these ones sold online or in my local stores yet. Waiting specifically for SY's sets because of their better quality, in terms of both bricks and minifigs. I guess the downside for SY is that they release late in exchange for quality.
Hoping SY's being busy right now preparing new Star Wars sets or maybe even Captain America Civil War sets. Heard that Lepin (who has released so many Star Wars The Force Awakens sets already) was okay but more of a hit or miss when it comes to brick quality/completeness, and SY minifigs are still far more superior.
(Note: Picture from http://www.aliexpress.com/store/1459866?spm=2114.10010108.0.83.YWno4a# )
(Note: I think the Tie Fighter in the above set is a Tie Advanced Prototype (From Star Wars Rebels?) and the one below isn't an AT-AT for sure because the AT-ATs are bigger. That walker doesn't appear in the movies and is exclusive to Star Wars Rebels at this point I think. Looks more like an AT-ST instead of an AT-AT.