I think one of the block explorers or blockchain info sites, maybe most/all of them, can show you how much in transaction fees a block had, maybe even a whole table showing many blocks on one page summarising how much fees they included if you are lucky or if anyone previously imagine such a table might be useful in some way.

You could look at various coins' explorers, to get a feel for how much they get in fees compared to how "big" or "major" a coin you think it to be.

You could maybe compare number of transactions per block to fees per block, stuff like that.

-MarkM-