I'd always planned when building the shed to coat the floors but when it came to it I looked into the costs and had second thoughts.
My mate then just recently put me on to this clear epoxy that a lot of industrial builders use that you can add a tint too and was a fraction of the cost.
I did ~100sqm for less than $250 AUD and i'm very happy with the results, dropped a few things already and it's help up.
Cleaning up, even just dirt/dust is a breeze now compared to the bare concrete.