As noted in our stories as well, the TRU TIE is very most likely the Canadian price since it came out of the TRU Canada Computer system as confirmed by Toryn Farr. The Target story is just that the TIE Fighter DPCI # is active in the computer still. Target re-uses DPCI's often, so the TIE Fighter may wind up there, or it may not, and prices set to DPCI's have changed in the past closer to an item's release time as well. I'm hopeful it'll remain $40 though, but, as the saying goes...
"everything is subject to change", and that firmly applies to both these stories as of right now.