My personal favorite for Quail is a Browning O/U with 30" barrels ( in a 20 or 28ga ) - the XS Skeet model ( but new they're about $3,000 ).
I do see a few used ones around - but $ 2,000 plus...
A good use Browning Citori Lightning might be available for around $ 1,000.
The prices are up on the better O/U's since you shopped last ....
You might consider a used semi-auto like a Remington 1100 or a Beretta 390 ( the newer ones are the 391 model ) and I'm seeing a few of the 390's around. Benelli makes a nice semi-auto / shoots a lot cleaner than any of the gas operated guns - but it's $1,250 plus depending on the model you like. Benelli Super Sport is a nice gun ( 12 or 20ga ) but new about $ 1,875 and I'm not seeing hardly anything used around in the Super Sport - but its a nice lively gun.