Ok, don't let the nay sayers get you down (though Jolly does have some very good points)
that said, do some research (which I suppose this post is research lol) find out what sort of laws you need to be up on.
Each state varies on business practices (rather a lot btw)
But you will likely need to have a proper business license, which you may not be able to legally get until 18, if you want to sell wholesale to retailers, here in WA you also need a resale permit, and you have to keep track of BO taxes as well as what you spend and receive then pay taxes on the profit either quarterly or annually (again each state varies) Any of this legal BS could totally be taken on by a parent or drunkle/vodka aunt/grumpa/trusted neighbor, its just paperwork and its a stupid law to not let underage folks have legit businesses... If you were my nephew, I'd totally sign you up and push you along, turn 18 and sell it to you for a dollar (eyes wide open if you have to choose an adult for legal reasons FYI, they may be nice now, but 4 years and a successful business later even nice guys will see dollar signs its sucks but so do most people)
Anyway... As for getting retailers to sell your goods, you first need to have a reliable supply, and dependable delivery, if they need xx cords delivered Friday, you better have it ready BEFORE they call (this isn't always feasible, but you should strive to do your best in this regard)
As for kiln dried, there are commercially available kilns built and marketed just for this purpose, they are however not cheap, but the concept is fairly simple, heat at xx temp until xx moisture content or a set length of time (the time is to kill the bugs etc, moisture content is the guaranteed fresh stamp) Yer a smart person, all you really need is a big heat proof box and some sort of reliable heat input and temp/time control, a bunch of corrugated siding and a crab cooker or some other heat input(as the crab cooker is not exactly the safest) with a manual pyrometer (like a thermometer only more skookum) and a clock, maybe just maybe some fiberglass insulation for efficiency, add a couple vents so you don't build a steam bomb... stack loosely, cook until done (there are many many threads on kiln drying lumber, the concept is the same without all the saw work)
However all the technical BS aside chances are you live in a smallish town, and small towns tend to have opinions about gov interference so you might just find a gas station, or mom and pop fishing/camping/hunting type store that will gleefully sell your products for you, (and to be honest the hardware store types tend to have national supply chains, and likely won't want to bother with "some dumb kid") (and frankly you probably would hate dealing with that type anyway) (theres a guy in my town that sells at the grocery store, and a few others, he's built some reasonably skookum plywood boxes that live just outside the main entrance, and are lockable... folks take what they need on the way in or purchase on the way out like buying bagged ice each bundle is shrink wrapped and has a wad of kindling and sometimes some paper honestly i'm not too keen on the plastic shrink wrap, but there aren't a whole lot of other viable options)
as for making a deal, pull yer pants up high, waltz into the nearest likely culprit of a store, and DEMAND TO SEE THE MANAGER... they worst they can do is tell you no.... yer 14 time to get used to rejection anyway lol. (remember the stores that were rude... 3 years from now when they are begging you... charge em extra)
I'm rooting for you, even if it seems like the world isn't
