hmmmm i think i will sell my final spare 4.x 3ds (not that 4.x counts for anything now days )you can always sell locally if you want, or it would even be a good idea as a bundle for anyone buying your AUS n3ds, or any 3ds at that.
Or for laughs. Laughs is the best reason. Laughs>>> money.
But honestly, do it if it's not too much of a financial strain. Kinda like a nice 'F*ck you Sky'
Except we get an ok flash cart