25NL - Calling 3-bets with pocket pairs

[hummusx]

This is sort of a general question. In this particular case villain is 27/15/2.9, but I'd like it to apply more generally. It's $2 back to me with slightly more than $5 in the pot. So I'm already getting 2.5 of the 7.5 I need to call. He apparently likes his hand, so getting another $10 if I hit is likely not going to be a problem. This leads me to think that calling is an ok move here. Then I think to myself that I'm playing 33 for $3.50 pre-flop and that's crazy.

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB ($27)
BB ($15.90)
UTG ($23.65)
MP ($41.30)
Hero ($32.25)
Button ($25.50)

Preflop: Hero is CO with 3[img]/images/graemlins/diamond.gif[/img], 3[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $1</font>, Button calls $1, <font color="#CC3333">SB raises to $3</font>, <font color="#666666">1 fold</font>, Hero calls $2, Button folds.

Flop: ($7.25) Q[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $4.75</font>, Hero folds.

Final Pot: $12