Is it ok to change the RULES halfway through a game?

[bigbritchz Topaz]

well the 11 special cats are rare because A, kc was not as big as it is now at that time. and b. because we knew nothing about holding on to cats to sale them at a later date. hence why most selling there leprakitties are grown and used. the only boxed ones are from those who had such a vast amount of them and those who had the forethought to hold on to them. now we all know to have a spare 10 LE kitties..lol

so can we really compare markets? i dont think we can its like us comparing the price of bread in 1910 to the price of bread today.