Investing Versus Buying a Home
This is something of a semantics game, where you could argue the meaning of a certain word one way or the other. But in technical terms, buying a home and investing in a home are much the same thing.

Need tips on buying a new home before selling my current home.
Your best bet is to sell your current home as quickly as possible to avoid double mortgage payments.

Does the sale price of a home include the agent's percentage?
In most cases, the agent's commission is not part of the sale price. The agent's fees are usually part of the closing costs, which are above and beyond the sale price.