There is definitely a bug though, the other night while running with a PUG on the gree event we wiped (don't get me started) and I had 0 repair costs... then the next time I had 30k in repair costs... so something is definitely not right in repair land... and I repair after every death (repair droid FTW).
Oh there definitely could be a bug. Its BW I bet there is. But the repair cost is going to remain higher even with the fix when it comes. So might as well just get used to it imo lol.