You're going to pay about $600 for that G20. Then you're going to discover it has Tupperware for sights, and that's going to cost you another $100 to remedy. Then you're going to remember you have to have something to tote that big bitch around in, so better budget another $150 or so for a decent Kenai chest rig. Then you have to feed it, where you'll discover plain old vanilla Sig Sauer 10mm ball runs about $34 a box...if you can find it.
Where was I...oh, yea, the trigger is actually passable, but the other cool guys will look at your scornfully if your's isn't straight, and in a designer color...
Anyway, if you're so thin you need to raise your credit limit to buy a cheapish pistol, just remember it's not the purchase that bankrupts most lottery winners, it's the operating cost(s).