It depends on several factors, and it is too broad of a question to answer.
It depends on what brand and what kind of shape it's in. It could range anywhere from a few hundred dollars to a couple of thousand.
$489!!
The most accurate handgun is the CZ 75 SP-01 and it retails at around $600 - $700.
25-65 USD
Most gun stores have pistols ranging in price from $150 (very low end model) to $2000, or more (for very high end models).
50-200
100-350 or so
A beratta 8040f handgun can be at least $389.95.
200
50-125 or so
100-1000 depending on specifics
it depends on which model and what condition it is in.