How much is not showing a steal worth?

Let me say, first off, that this is a $5 tournament, so of course there is good reason to think that image is of limited importance. But the guy who folds in this hand, at least, will probably make note of what I raised with. I've been very tight up to this point, and as we had just gotten to the bubble, I was planning on opening up a bit. The pot was offering me decent odds to call with middle pair, but how much value should I assign to keeping whatever tight reputation I currently have?

PokerStars No-Limit Hold'em Tourney, Big Blind is t800 (9 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

CO (t12808)
Hero (t21224)
SB (t10685)
BB (t5914)
UTG (t28850)
UTG+1 (t36388)
MP1 (t1406)
MP2 (t15996)
MP3 (t7014)

Preflop: Hero is Button with 6/images/graemlins/spade.gif, 8/images/graemlins/spade.gif.
<font color="#666666">3 folds</font>, MP2 calls t800, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to t3200</font>, <font color="#666666">1 fold</font>, BB calls t2400, MP2 calls t2400.

Flop: (t9200) A/images/graemlins/spade.gif, 8/images/graemlins/heart.gif, Q/images/graemlins/diamond.gif <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets t2664 (All-In)</font>, MP2 folds, Hero calls t2664.

Turn: (t14528) T/images/graemlins/spade.gif <font color="#0000FF">(2 players, 1 all-in)</font>

River: (t14528) A/images/graemlins/club.gif <font color="#0000FF">(2 players, 1 all-in)</font>

Final Pot: t14528