There are many websites where you can sell your electronics and good great prices for them. It is also free for you to send it to them. They send you a pre-package to send it in and you just mail it to them. It's completely free. I think it is easier this way because you don't have to worry about putting the money you just made back into shipping. You can use it to purchase new electronics or whatever you need to do.
Many web site are well known. Like ebay, amazon any where you can sell your product.
I recommend you use what other media buyers do that is to advertise in Online Business Classifieds or Internet Business Classifieds. Diversify free publicity and paid ads. There are pros and cons of using free ads. Invest in promoting your website at Largest or Biggest Classifieds. Additionally, use social network sites too.
amazon... it's a ton cheaper than ebay!
looking for a website that will give me a good price for electronics such as camera, camcorder, an old Compaq laptop