The latest monthly earnings report is posted here.
Remember that these are 5×5 (BA) prices based on the full league budget of $3120 per team in a 12 team only league.
These are made on the fly, so they give positive values to the Top 108 pitchers and the Top 168 hitters, not based on position, so there will certainly not be 48 catchers with positive value.
At the end of the season I’ll release actual prices for the correct number of players at each position. It does make a small difference.