Where do i start,as you know colourware do the majority of custom consoles for the US/UK the simpsons one for example has 94 ntsc editions and 6 pal ones making the PAL version more sought after,most custom consoles are the result of competions run on facebook,comic con,xbox live ,slurpee and the information can be found via the web doing some simple reasearch,others are created to promote games and then auctioned off for charity or won in a competion and sometimes include a letter of authenticity from the developer/software house as in the case of the READ DEAD REDEMPTION one i own,there are only 3 in the world,all i can say is do some reasearch,sometimes sellers may say its 1 of 5 when in reality there where 20,in most cases though apart from the simpsons and the grand theft auto ones the numbers of most custom consoles are 20 or less in some cases it may only be one like the kylie minogue i have.If i can help you in any way PM me
