As it has been hashed out in multiple posts, the shooter had a job and saved his money. Hourly pay is pretty good since the WuFlu was bestowed on us. Around here the lowest pay starts at $15/hour for 15 year olds who can only work the register to $18+ for closers/openers on the weekdays. As he lived with his grandmother, he probably didn't have to pay rent or for food so the pennies add up quickly. In 1983 I paid $2200 to "hotrod" my Camero's engine and I did that off a summer working full time and another three months part time at KFC for $5.50/hour. That was probably a minimum equivalent to the shooter's purchases.
The income would likely have qualified him for a credit card with a credit line of at least his purchase amount. The box store I worked at after retirement offered a credit card and I talked a number of part time employees into opening one to make large purchases as they would get a 10% discount doing so. I did coach them on having the money in hand at time of purchase so they could pay it off immediately. A life lesson schools and parents used to teach but, sadly, no more.
that is just as much a guess as anything else I have seen. There has not been any facts given about this little creep.
