Sliding Pantry Shelves

I have found several posts on the subject, but nothing that meets quite what I am looking for. We have a pantry that has pretty deep shelving, which makes it hard to utilize the space entirely. I have found a few big box solutions, but they are silly expensive for the size of shelves that I have. I was wondering if anybody has any thoughts on building my own shelves to replace those that are there, adn installing slides on them. If possible, I would like to mount the slides to the cabinet via standards so I can rearrange if necessary. Thanks!