I don't think you'll be happy with one of them. We had one for one trip out, it didn't make it home on the return trip. All the stuff that we had on the shelf was laying in a heap on the bottom shelf.
When we got home, I dug out the left over metal closet shelving and cut it to fit. To install it I used some srtips of 1X4 that I ripped down to 1" strips, then I epoxied them to the inside of the cabinets.
I had enought in a ten foot piece to do all of the kitchen cabinets, including the pantry and the bathroom base cabinet.
When I was a kid I was going nowhere fast, now I'm an old man I'm going everywhere slow.