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-
So do you think people would keep mining ixCoin just for some paltry fees? That's the biggest risk in my mind, people could just lose interest and totally forget about ixCoin as soon as there's no more coins to mine.
Is it possible for ixCoin to do a hard fork and say, add just a few hundred coins per month forever as a kind of inflation thing? Something to keep people mining.