No Slip

I spend a lot of time at the hardware store. They sell anything you could ever need for building a house. This particular time I was picking out a new tub for a rental property that I have. There's a large selection  out there for something that just holds water. I guess the major piece of engineering would be the hole in the bottom that we are given the option of keeping water in and letting water out. There was not much difference between the tubs except for size and price then I noticed that some of the more expensive tubs were called "no slip" tubs. Why not make all the tubs "no slip"?

I wanted to call the salesman over just to hear him try and sell me one of tubs.  "Over here we have our no slip tub which as stated does not let you slip when either getting in or getting out of the tub. And over here's our slippery tub, it's basically made out of thousands of banana peels. I dare you to try and get into this tub when it's full of water with out injuring yourself."

Being a responsible landlord I of course bought the no slip tub. I'm pretty sure that they don't even have any of the slip tubs in stock and the display models just there to get an extra $50 out of everybody. Please do us all a favor and only manufacture the no slip tub incase somebody actually buys the banana peel version.