The S&P 500 index (SNPINDEX: ^GSPC) is currently offering a roughly 1.2% yield. That's pretty miserly. You can get 4.2% from Toronto-Dominion Bank (TD 0.03%). And 5.5% from Realty Income (O -0.60%). Or even 7.2% from Alexandria Real Estate (ARE -1.34%). Each one of these high yielders is trading for less than $100 a share, but are they worth buying right now? Here's what you need to know. 1. Toronto-Dominion Bank is under an asset cap TD Bank, which is the more common name for Toronto-Dominion Bank, got in ...