The completed model on display is the one done by Meister Morishita from Dengeki Hobby Workshop mentioned on Tuesday.
Hobby City's offer: Purchase MG Wing Gundam and Wing Gundam Ver. Ka (today reissue) and get a free poster.
As you can see, the price offered at the shop shown is 2,940 Yen, which is 30 percent off the regular price for this MG. ^^;
Images are from Moeyo.