origional monopoly vs clone prices

[kndcattle]

Was looking at results of matt lautner online semen sale tonight.  Noticed the origional bring 200 plus/straw i believe.  But what shocked me was the difference between the clone #2 at $150/straw. and the clone#4 at 42.50/straw.  and the clone 5 at $20/straw.  I can understand the difference between the original and clone.  but why the difference between clones.