Boot discs are very easy to find, but they cost more alone than with the unit. It'll run you around $20, but sometimes more if prices are trending up. I bought my NGC Gameboy Player with the boot disc for $30 total shipped to my door off of eBay, if you're patient you can find both together for some pretty low prices. Alternatively, if you can find the unit for very cheap (around $10-$15 bucks with shipping included), you can always buy the disc later. Those stay pretty steady at $20.