Where to sell PC parts at?

If I decided to upgrade some parts in my PC like my graphics card in the next year or so, where could I sell my PC parts at and get decent money from them?

ebay, craigslist or if you're part of a forum that has buy/sell/trade you can post things in

Kijiji, Any online classified really. Toms hardware has a forum sales page, Linus tech tips site I think has a sales page on the forum. Ebay... After that I don't really know.

ebay if you patient enough

By the time I replace my GPU it won't be worth much. By the time I replace my CPU it will be worthless.

My parents are getting the old bits when they are enough to build a new PC for them.

Edit: To be somewhat on topic. Ebay I guess, as many have said already.

Any stores non online that you could sell them at? Dont really want to sign up for paypal if ebay still uses that, and from personal experience craigslist has just been people trying to scam other people. Have a gtx 980, might get another 980, then sli next years nvidia gpu's. So would like to get at least $200-$300 out of each when I upgrade.