Mine was also adjusted to owing $100.

$110 is still a fair price for Leader Class, which currently has a RRP of $105 in Australia for the regular retail line... and this is a limited edition exclusive.
It would have been great to get it for $60, but we clearly knew that it was an error, as that would be EB's current Voyager pricing (the most recent figures were $58-59, so an extra dollar a few months later would not be that surprising)... so people shouldn't get too upset about it if they are asked to pay the proper amount, and if that is too much, then just cancel the pre-order, as there is no financial penalty if you do.