QUOTE(TAGreptiles @ Jan 4 2012, 04:30 PM)
Just checking real quick here, anyone knows what to check for when purchasing a used DSLR?
What signs of damage/wear and tear/ and stuff like that for me to look out for?
1.Try shake around see got sound anot.
2.See got any mark /scratch that is very visible(if yes,maybe dropped b4).
3.Open up battery cover and check is there any water stain(if there is any sticker by manufacture)
4.Try pressing each button,and turn the wheel(if there is any).
5.Try removing the lens and check is there any mark on the sensor.
6.Shoot a over-expose picture to see if there any problem.
7.Keep playing with it.(see owner reaction, if he looks scared ,maybe there is something he is hiding.)
8.Repeat steps 1-7 for the lulz.
9.Enjoy yourself

TEEHEE!
some may be nonsense, but heres some tips .