How to get a shiny chao on sonic

you can buy one and get one free...jk yea buy one from the black market if you have enough money. If you want alot of money do this trick:Buy an apple put it in a garden then save and come back to the garden and get the apple and go to the black market THEN...you sell it and soon as you hear the cha-ching! reset the gamecube and keep doing this repeatedly
~ x ~
Another maybe 'safer' way is to sell a whole bunch of things. Or maybe even one, then hold down, 'X', 'B' and 'START' on your game cube controller. Then enter the garden again, you will still have your things plus, the money that you sold your item(s) for. But make sure you don't double press 'X', 'B' and 'START' or else all the money will be lost.