I have the $12 target bath as well- actually, I think it works great! I put it in the big bath and use it for Peter with my hand under his head. Maybe something about the height of our bath, but it doesn't strain my back to lean over and hold him.

I just wanted to add that I very often take baths with Peter and we both love it so much! Most nights we are in the bath together. The skin/skin contact is really good for them and they love it. And its so relaxing! Its not always practical, but I encourage trying it!