Rental Rate Question

[Franco Li]

Hi All -

I use a mixture of craigslist and talking to local property managers to discover how much I can rent my investments out for, but was wondering what other sources do other investors use? 

More importantly, if there is a product out there than can definitively show the market rental rates (zillow and rentometer have their flaws unforunately), will any investors, agents, or lenders be willing to pay for this data? My team and I have pretty sophisticated tech backgrounds and can get these data points with a high level of accuracy, but before we even decide to do something like this, we want to gage whether there will be people interested in this information if it cost money?

Cheers.