For most things it is cheaper for sure. Some stuff there's a definite quality difference, other stuff the quality in both stores is not amazing so why spend more. Also Wally has rice krispies treat cereal and other stuff we just don't have because Walmart is gigantic and target is not (I have a super wally in the area as of like January but even prior to that wm was a little bigger than my tgt)
Buuut, if you have a discount, red card, cartwheel coupons, Rx rewards (where applicable) or any combo of those, tgt usually will come out cheaper for team members.