Just installed my own garage shelving... I have a shitty tandem garage so ended up doing length wise by the ceiling.
I tried to look for wire shelves but they were a bit out of my price range
I ended up buying these boards and brackets from Home Depot. They were about $40 a shelf with 3 brackets (you can get cheaper brackets of course)
Edit: Shelf board I got:
https://www.homedepot.ca/en/home/p.m...000147173.html