Well… the price of XEM in Coinlib appears to be 455sats when in exchanges its around 4550sats? No wait! You display price in seven decimals… sorry! Let users amount of decimals they want use for price? Would be really nice to have BTC moved closer to top (favorite?) for price selection box.
Apparently there is smallish bug on price graph, I did something following: chose XEM to display, selected BTC as base currency, then price from Bittrex, then ticked avg. price of, then clicked avg. price on and bittrex of and now I have two graphs for price (it says it is same price but there are two distinct graphs, one lower/higher than other).
I assume that you are going to put more features on graph along the way? (volume display for mouse hover, etc)