Heroes is more of a comics shop. They’ve always had a small selection of D&D stuff.
King of Cards recently downsized, and Vagabond downsized years ago. I’d say they both have the same amount of gaming stuff as Zard’s shop, just not the extra laser tag and stuff.
That being said, the laser tag place in New Lynn also sells D&D stuff (along with some other games) at their counter.
I haven’t been to Hobby Master in a while, and I haven’t ever been to any of the newer ones that have popped up here and there.