The first gun I had, was purchased by my dad from Charleston Hardware in Bremerton. It was a Wincherster 22 cal lever action. I still have it and the box it came in.
The first modern firearm I purchased was a 12 guage Winchester Ranger Shotgun from 4-Day Camera in Downtown Seattle. They use to sell cameras at deep discounts and the owner then got into trap shooting and would sell shotguns at deep discounts along with cases of federal 12 gauge trap ammo. If you saved the once fired hulls, and brought them back when you purchased another case of Federal ammo, he would give you a heavy discount. I have used this shotgun for trap shooting, duck hunting, snow geese, and upland game (grouse & pheasant). Still works well. It is not very pretty, but it is reliable and I have not qualms about taking it out into a duck blind and letting saltwater splash on it.
My first military rifle, I purchased was a Norinco SKS several years ago. I paid $99 for it and the gun store (Kesselring's) included 100 rounds of Chi Com ammo with it. It even included a bayonet. I was so pleased with it that I went back and got a second one so I would have one for each of my two sons. They were great first centerfire rifles for young teenagers. I took one of them and added a Choate monte carlo stock, a recoil buffer, a DC Engineering scope mount and a Tasco Red Dot sight and no bayonet. The changes were so that my youngest son would get really excited about taking hunter safety. At the range I belong to, their state required hunter education safety course requires either the use of a shotgun, bow, or centerfire rifle of caliber greater than 6mm, and using it in the live fire test at the end of the course. The rifle he used got lots of attention from the other kids and the instructor did a double take and looked it over pretty carefully. It's 7.62x39 ammo and gas system made for modest recoil and hunting rifle capability of about a 30-30.
My boys still enjoying going out to the range with a "battle pack of surplus ammo" and shooting and shooting and shooting the SKS. They are surprisingly accurate, inexpensive, and pleasant rifles.