To the OP:
I understand, and believe me I was with you all the way. When I started this 6 mo ago, I went to every B&M storefront within a 50 mile radius, all in my efforts NOT to do webbiz. I hated the idea! What I found was all VERY low-end of the spectrum. And it was WAY more expensive than the same stuff on the web. 40-$60 kits (online) were going for $200.00 in the kiosks and 100-$130 in the lil smoke shops!!! And NOT ONE OF THEM WAS EVEN MID-RANGE! All low end stuff. I tried these out in the shops MANY times and honestly, IMO, they all just sucked.
Then I came here and began to educate myself. After reading for a couple of weeks I realized there is a whole world of products that just aren't available from my local retailers. This is ESPECIALLY TRUE FOR JUICE! (More on this later.) The first thing I learned here is that many, if not most members started with one of these 'retailer' ecigs and almost every one of them later felt it was a waste of money when they discovered higher quality units purchased online. I NEVER would have quit smoking with the weak equipment I saw and tried at the 5 shops I visited. The difference was astonishing.
I was dragged kicking & screaming into making purchases from any web sellers! But now, 70 or 80 purchases later, I'm very happy I "came into the 21st century". From my experience, 99% of sellers here are 100% honest and professional. You will have FAR greater choices of MUCH higher end hardware. And you will get it for MUCH less money than the low line stuff at the kiosk.
But you want juice. if you buy the same flavor/strength juice from 6 different (online or storefront) vendors, You will get 6 completely different flavors.
My advice is
You will be FAR happier with your whole e-cig/juice buyer experience if you forget the brick & mortar requirement. That's just the truth.
How to buy online:
Hardware and SELLERS: Read all the opinions and reviews,and believe half of 'em. (If most agree it's a great product (or vendor), give it a try.)
JUICE FLAVORS: Read all the opinions and reviews, and believe NONE of 'em! All peoples' tastes are different and all juice recipes are too. In my opinion, the only way to find "your" juice is through trial & error. (Buy 6 pack samplers of 3ml bottles from reputable sellers. NEVER buy a giant bottle of any juice you have not tried because lots of other people liked it or because it 'sounds' like the flavor you want.
Hope this helped.
Edit: Oh, and by the way, If you're Dead Money Set on the cash only thing, Put cash into a PayPal account & pay from there. Many sellers take PayPal and the transfer is instant, no waiting for mail...