dartharch, somehow I believe the question was about the
Marketplace page here at KoL Coldfront, not about adding game content.
To answer the question: the Marketplace is already very useful (at least to type-A-personality nerds like me

), and thanks for providing it. But there are a few things that could be improved.
- Last year, there was a post by dotts about showing/plotting a median PPU rather than than the average. As far as I can tell, this never happened.
- Using the medians should help avoid or reduce the "glitches" that happen when someone buys an item for far above (or occasionally below) its usual market value. This is very annoying for plots, since one junk data point will change the plot scaling so you can no longer look at the trends in the "real" data. (I wouldn't really care if you used something other than medians to achieve this.)
- It would be very nice if the plots could show a better indication of the range of prices. Something like a candlestick plot showing the range between the 20th and the 80th percentile would do this nicely for items with high Quantity Sold counts. Of course, it would also be completely meaningless for rarely-sold items, but you could set some threshold based on the quantity.
- It would be nice if you could make the raw data available for download. (Any identifying information would need to be scrubbed first.) Did I mention I was a type-A personality nerd yet?
I can't think of anything else at the moment...