NL50SH, AJ hits A on the river, but can't valuebet?

[skibbel]

PokerStars No-Limit Hold'em, $0.50 BB (3 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

BB ($116.15)
Hero ($55.20)
SB ($50.05)

Preflop: Hero is Button with J[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, BB calls $1.50.

Flop: ($4.25) Q[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $3.5</font>, BB calls $3.50.

Turn: ($11.25) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero checks.

River: ($11.25) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero ???

He's 25/15/1.9/27. 250 hands
After his rivercheck, his range is FD/Q9-QJ. I'm getting only value from AcXc, i doubt he calls a single queen/king. So i cant see any value in betting. Do u bet?