I believe right now it is although prices are going through the roof.

But larger repair items such as appliances and mechanical, plumbing, electrical, roof windows doors etc should still fall under the landlord's responsibility.

They provide essentially all the tools under one roof for you. 

Roof ~20 years, STR kitchen 15 years, HVAC 15 years, etc.

The $1300 does not seem out of line at all to me, insurance right now is going through the roof and what would have been ludicrous last year is now looking like the new normal. 

Roof, windows, siding, furnaces all under 5- 7 years old? 

The house is in good condition, AC and roof are 5 years old.Generally I keep $2000/year towards maintenance when I buy houses that are 5-15 years old in this price range.

My business partner and I paid them $12,750 right after the roof was done, and this was for the total roof replacement plus half of the rest of the project.

Even just pulling Comps for bedrooms, bathrooms,sqft,acreage build year,only 5 comps come up within 5miles.add a 30x40 shop in the mix and a tiny home on a neighboring lot.1/4 acre pond. 3 storage buildings.brand new roof and hvac.

The single roof is a plus for the FP.