I was watching that auction (I would have bid if 
it had not gone so high).  When shadowcat bid 
29,999, I immediately KNEW that you had bid 
30,000, because otherwise the current price would 
have incremented higher than 30,000;  it would 
have incremented to something like 30,499 or 
30,999 or something similar.

So, AFTER placing the bid (not before) shadowcat 
also knew exactly what your bid was, and he/she 
knew they could have the cel for just TWO more 
measly yen.

Very strange.