How much? A man can never have too many bottles.
To be honest, this is stuff I've accumulated over the past couple of years. The LS1 MAF plate and nitrous express stuff I got tonight. A buddy of mine ran into some personal issues and needed to sell it for some personal reasons. The billet Camaro rear hump mounting plate and switch panel came with it.
I'll be going back to a single stage on my truck. This time it'll be a single 150 (through a 92mm two stage plate) with dual heated 10 lb bottles for less pressure drop.
I think the small solenoids and 78mm MAF/plate is sold.