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Buying a small amount (e.g. $50) of stock via eToro “Social Trading Network” using a “CFD”?
As Waldfee says, CFDs are a derivative (of the underlying stock in this case). If you are from the USA then they are prohibited in the USA as has also been mentioned. They are not prohibited, however, in many other countries including Australia.  We can buy or short sell (on a limited number of securities) CFDs on Australian securities, USA securities and securities from many other countries, on FX, and different commodities. The reason you are paying much less than the actial stock price is worth is because you are buying on margin. When you go long you pay interest on overnight positions, and when you go short you recieve interest on overnight positions (that is if you hold the position open overnight). Most CFDs are over the counter, however in Australia (don't know about other countries) we also have exchange traded CFDs called ASX CFDs. I have tried both ASX CFDs and over the counter CFDs and prefer the over the counter CFDs because the broker provides a market which closely but not exactly follows the underlying prices. Wlth the exchange traded CFDs there was low liquidity due to being quite new so there was the potential to be gapped quite considerably. This might improve as the market grows. All in all, once you understand how they work and what is involved in trading them, they are much easier than options or futers. However, if you are going to trade anything first get yourself educated, have a trading plan and risk management strategy, and paper trade before putting real money on the table. And remember, if you are in the USA, you are actually prohibited from trading CFDs. Regarding the price of AAPL at $50, the price should be the same as that of the underlying stock, it is just that your initial outlay will be less than buying the stock directly because you are buying on margin. Your initial outlay may be as little as 5% or lower, depending on the underlying stock.