if identical comps are 160, 160, 160, 160, then it's 160. 

https://secure.lni.wa.gov/verify/ 

Does PetScreening offer anything besides what I did, which was call to verify them & their license?

They skip that property and send someone to verify and come back to it later after they know if they were paid or not to avoid a situation like may have happened in your case.

I just got confirmation he got a job but obviously the only thing I can verify is his rental tenant history. 

Inspect to verify compliance.

For turnkey, it's easier to do when remote but verify your numbers before buying.

They do not actually have any money coming in that's why they charge so high and keep changing names so that no one can recognize them and they take a new identity every few years, do not sign anything with them!!!

Verifying rental history often takes a long time tocomplete due to applicants not giving us correct landlord contact information, landlords not returning our callsor refusing to give us any details.We also deal with applicants trying to have family or friends pose as theirlandlords.

I check on real estate taxes, local taxes, insurance cost, etc.You also want to do your due diligence to verify property conditions, easements, neighborhood, and other details about the properties.