By Eric Reed Real Estate Investment Trusts offer a straightforward way to participate in property price and rental gains, Real Money Columnist Paul Price argues. When investors think about real estate, they tend to think about buying physical property. You purchase a home, flip a house or even look for some small section of commercial real estate to get involved with. That’s unless you’re someone like Donald Trump with the access, deserved or not, to financial resources needed to gain control of substantial buildings in major urban centers. Real estate isn’t a bad market. In many communities, …