No problem, @Amir B. There are definitely properties in Fresno that cash flow and are around $300,000. For example, just scan Loopnet - Fresno, and you'll find this fourplex: http://www.loopnet.com/Listing/19917623/2553-S-Hol...
Looks to be in fairly good condition, 7% cap rate, actuals of $22k NOI, and public records show the property was purchased in 2015 for $290k. "There's probably some wiggle room on price, and the financials are solid; I should take a further look." Or, at least, that's what someone who doesn't know the intricacies of the area would say.
Unfortunately, the moment I saw the cross streets, Jensen and Golden State in Calwa (an unincorporated CDP in Fresno), I clicked next. Cognizant of the demographic rules above, we know that this property is in a war zone. And we can confirm this by looking at criminal data in South Fresno. Finally, we should know that large stretches of Golden State are notorious for prostitution and drug dealing.
By contrast, let's look at a property in Clovis: http://www.loopnet.com/Listing/19833265/605-W-Ashl...
This fourplex is listed at $415,000, with a 3% cap rate, and actuals of $12k NOI. While the cash flow (if any after debt service) is trifling, I know that because this is in a great area (Willow and Ashlan, right next to Fashion Fair and Fresno State), I'm going to have a great tenant pool and feel comfortable visiting my property.
In sum, there are properties in Fresno that cash flow in your price range. You will; however, have to balance the potential cash flow against the many risks of owning in a war zone.