Zikwid can be pricey for sure, but as with all brick and mortars they have overhead to cover that web-only shops don't have like rent and payroll and licensing and stuff. When you figure in the lack of shipping costs and wait times, the difference isn't so drastic.
Another upside of the B&Ms is that they can service foot traffic, people that just wander by because they're in the neighborhood. For lots of people, a physical store is the first time they've ever even seen a real e-cig. If I was King of Phoenix, I'd turn every Title Max out there into a vape shop!