Building your own would be the cheapest way to go with 15 qt tubs for the little ones. Its really quite simple, you dont have to be that mechanicly enclined, just able to work in straight lines and your golden.
Ya i was thinking about it using melemine. My wife is a bit picky with the way things look, she likes it neat and the rbi racks look good.
I built mine and it looks professional, it depends on what you put into it. you do a bad job and you get bad results, take a little time and think things through and you will get some pretty good results. melamine is a nice particle board to build with I have built all mine with it.