I have to agree. Our Duplex cost us 200k initially in 1998. Over time and completely refurbishing the property with historically appropriate sensitivity, we invested another 200k or so. We just had a realtor advise us we could ask 700k for it today. It nets us 30k annually after taxes, insurance and maintenance. We still have a loan on it which I have not taken into account, that will be paid off within 5 years if we keep it. My mental drama now is, while I am quite giddy over the prospect of earning a tidy sum of profit if I sell, what then would I do to equal the ROI and monthly income this thing generates? Rents are low, they should be 4k a month and will only go up. Tempted to keep it and not sell. And while I do have some stocks, I basically suck at them. I am much better at doing properties.
One of the great parts about the online world is that a website and its domain name is like real estate - It can go up in value over time. In fact, sometimes just the domain name without the developed business can be worth quite a lot to some people. Of course, like almost anything mentioned here, the necessary know-how is required. If you’re willing to put some time into it, then you can earn a nice online income. So far I sold 4 domain names with an average price tag of a couple of thousand dollars. Nice income, considering I bought each domain for around $10….If this income stream interests you, check out flippa.com - It’s one of the best marketplaces I know for selling websites or domain names.
eBay is, of course, the biggest and most popular auction and shopping site out there. You pay a small insertion fee to list your product (starting from 10 cents) and a small portion of the selling price (10%) if your item sells. Currently, insertion fees for your first 50 listings per calendar month are free. Also, if you are planning to sell on regular basis, you may want to consider setting up an Ebay store. Among other things, this will allow you to list your products at reduced rates.

If you have specialized knowledge in a certain topic, you can put together an online course to teach others. For example, if you have experience in real estate investing, you can create an online course “Real Estate Investing 101”. The benefit of an online course is that once you create the course material, you can sell it to as many people as you want.