party 55's

[Absalon]

what is the typical calling range of all in's in the 55's. i decided to take a shot at one only to get to the bubble, and push in the SB with a5 when it was folded around to me. the BB insta-called me with k10 even though we both had 1500 chips and were in no real big trouble of getting blinded out. i watched the tournament til the end and i am very surprised that all in's were being called by a2, j10, etc. is this standard or did i sit in a good game?