Where can I sell my Nikon D3X without being scammed?

I've trying to sell my Nikon D3X camera for the past 2 weeks in order to purchase a new car since mine died on me last month. I've tried ebay but both times I thought I sold the camera, someone tried to pay me with a money order and another person got banned from ebay within 2 hours of winning it. As for Craigslist, all I get are emails from people telling me to mail them my camera to Nigeria, that they just made a payment through western union. Clearly scams. All I want to do is get at least $4000 for my camera + lens & accessories as soon as possible. Does anyone know of a website or store in Miami, fl where I can sell my camera? I have pictures, receipts, and a paypal account. Please someone help me!

Il pay I live In miami

Check with your local camera shops and see what they will offer you.http://www.yellowpages.com/miami-fl/camera?g=Miami%2C+FL (I would avoidRitz/Wolf camera though)

The other place I would trust is B&H Photo, they could give you a ballpark offer over the phone, but you would need to ship everything to them for a final inspection.

Www.keh.com is a well known buyer and reseller of used photo equipment.

You can relist it on ebay and exclude anyone who doesn't live in the US! When you list an item, you can exclude other countries on the listing page. If you do this, people who live outside the US can't bid.
You can call ebay for help! I did this when I sold my cell phone.