How confused am I?? Another A9 hand $55

[ChuckNorris]

1) Is this okay usually?
2) Is this okay since I have a read on the BB that they're calling with every A, many K's, all pockets, maybe some total crap like J9s?

Seat 5 is the button
Total number of players : 5
Seat 3: Mulperi ( $1055 )
Seat 4: KINGER19181 ( $1100 )
Seat 5: Dacapo79 ( $1580 )
Seat 7: larisa ( $2620 )
Seat 9: messdog_usmc ( $3645 )
Blinds(100/200)

** Dealing down cards **
Dealt to Mulperi [ Ac 9s ]
Mulperi is all-In [1055]