Dude...don't buy dirt....do you know anyone with a truck? Just give them like 20 bucks to get you some dirt from somewhere, or find a place where you can dig it. The store will charge you an arm and a leg for it and to deliver it too.
Clay usually packs the best and is good for jumps and stuff.
When all else fails...Ham Radio!
I still have the same old HP DV9700T laptop I've had for years...still kickin'