They spend a ton of money on advertising their product and apparently have none left over to spend on product development.

This company works on false advertisement.

My company has just grown organically - we've never advertised per se. 

I should clarify a couple of things - the city is abandoning their current drain line as its undersized and installing larger pipe next to it so can't be a trenchless pipe but would have been nice. 

Also, staging and professional photography can help potential buyers visualize the space better.Lastly, think about local advertising—social media, networking, and maybe hosting an event for local agents could help get more eyes on the property.

The fact that your property manager only advertises on Zillow is worrisome.

I feel there is potential for it to be a good MTR if I advertise and take pictures properly.

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

So spend NO money on advertising and use that money to make our product stand out.. this has led us to raise our prices Far above our competition more than makes up for it and we sell them as fast as we can build them.. for us thats delivering 2.5 homes per month. 

I no longer use either Facebook or Craigslist for advertising my units.