there are a few reasons behind it:
frst of all i dont wanna be a money blocker, which means i dont want to reduce the price of a certain pokemon just because im in the same guid as he is.
my second reason is that i dont know fallen that good. he didnt tell my anything about this volca before he made this auction and he didnt know that im MAYBE interested in.
my last reason is that i wanted to have a fair competition. so is that enough?
it was over at 2 c'clock british time, the post of "25 minutes left" just gives you the hint that its over after that but doesnt increase or decrease the auction time, it can also be 26minutes then :D