Is this a Good Deal or Not??

[Stephanie Paulk]

Hello Everyone!! I'm totally new to Real Estate Investing and wanted to ask if you all thought this was a good deal I came across! 

Someone is selling their 2.4 million dollar portfolio comprised of single family homes, multi unit properties, and commercial properties. It's producing $280,000 a year with an instant equity of $250,000. He is willing to owner finance with $100k down. I'm new and wanted to get your input on whether this is a good deal or not.