My parents have some really cool rolling shelves made from regular old metal shelves with the wooden flat part. So for Christmas we asked for our own set.
Total cost for this project (I am guessing because it was a Christmas gift :) $100/ shelf and $10 for wood. So around $160 for a nice rolling shelf.
Then to make the little dividers my dad cut out some 1 inch by 1 inch wood pieces. Then we decided how far apart we wanted the wood pieces and nailed them down with the nail gun.
The other thing we did is the top shelf and the middle shelf are regular shelves. We did this because the metal upright pieces come in 2 pieces for each upright. You could rig a bracket to still have shelf rolling but it definitely would be more difficult.
Now thanks to my parents we have an awesome rolling can shelf.