What is the thinking on the low rental prices on homes versus purchase price right now?

[longwood50]

I see numerous ads for very low rental prices on homes that are listed as for rent or for sale.  I saw one this morning for 30,000 thb for long term rental versus asking 9.5 million for sale.  Are they just trying to generate some cash flow on the properties, hoping the price will improve in time.  At as little as 3.25% interest having 9.5 million invested would generate for the renter more income than necessary to pay the long term rent and have no expenses for things like homeowners insurance or community fees.  

Now perhaps they are over pricing the property knowing they won't get anywhere close to the asking price but at 30,000 thb per month a person would be foolish to purchase versus rent unless the purchase price was much much lower.