They publish the top earners numbers usually at the end of the season..
Usually a fair few with £600k plus...
Which is why it pees off the Poles when their riders get injured riding overseas...
Riders will use their signature money at the start of the season, to build not only their Polish kit, but also their GP kit, and their kit for whichever other leagues they race in..
Also. Look at any rehab that needs doing. Invariably it is the Polish team footing the bill, regardless of where the relevant injury happened....
It is big money, big pressure, big jeopardy, big consequences over there...
Just how a professional sport should be..