Title says it all.

Picked this gun up a year ago.  I have approximately 300 rounds through it.  Looks brand new.  

Also, the gun came with factory installed Meprolight night sights.  From what I understand, HK did a small batch of these guns with the Meprolight tritium sights instead of the plastic glow-in-the-dark sticker sights.

From what I've been seeing on the internet, the prices on these vary wildly, especially when you factor in the sights.

Can anyone give me an estimate on the trade-in and retail value of this gun?

Forgot to add.  I have the original box, paperwork, grip panels, and mags.  I even have the receipt.

Don't trade it in, you'll get hosed.

Retail value I would say between $700-750.

I have the same gun, probably in the same condition. I think I'd ask around $800 for it. Someone will bite eventually.