AAChang,
I have a Remington 870 Wingmaster 12 ga. 28 inch plain full choke barrel, bluing, walnut, bore all excellent. It is the right-handed version, but the jumbo saftey is set up for lefties (just has to be switched to the other side if you're right handed). $239
The other is a Mossberg 500, 2 years old, less than 75 rounds through it, 8-shot, synthetic, blue, 20 inch cylinder bore barrel, side saddle, swivel studs, excellent condition, $169.
Let me know if your interested.
My email: tclayton2@yahoo.com