Looking for (easy) way to find aggregate prices of q.20 lv.20 gems

I'd like to exp gems for some extra currency- is there any tool (poe.ninja alike) where I can compare prices (min/med?) of each lv.20 q.20 gems? The idea is to find most expensive and lvl it up from lv.1 q.20. I found that min Freezing Pulse is 35c(!) at the moment, but it took me some time to find it on poe.trade- do you know easier way?

Changes based on the meta. I'd bet you the current changes to Specters would create a demand for 20/20 gems that Specter builds use. But you have to stay ahead of the game and try to figure out what the next big thing is.