Commison

I was having a nose around on the Brightwells site & I was looking at some of past results from the sales & I saw that a lot of the foals were going for as little as £20! Is that the actual price the foals are sold for or is it the commison the auction gets? My friend it was the actual price for the foals I'm a tad confused lol
Here's the webby I was looking at:
http://www.brightwells.com/Portals/6/results/bloodstock/November%202006.pdf


"We've gone on holiday by mistake" Withnail & I