The kits are still a cheaper option than installing a new shower surround. 

I would caution a residential landlord to be very careful about allowing the installation of a grow where it could suddenly be precluded by local ordinance.  

They would love to have an installment sale and seller carry the loan.Terry Lewis

In that case you have to rip out the grease trap and possibly replace some of the line. ( very expensive )Some lazy plumbers will install the grease trap above ground inside of the restaurant and run pipes to it on the floor.

Two of the three always up front, and sometimes I break up the third into a few monthly installments.

I am replacing windows in a flip home and wanted to know what a reasonable installation fee is to install. I

I had a 2 month project that included 2 layers of siding ripoff with new vinyl siding install, all new windows including basement, 3 layers of asphalt shingles and the original cedar shake and then new roof, paint interior, finish removing old structure, some new flooring, some kitchen and bathroom remodel among other areas.

That's where I would start.Then ask everyone you know who does real estate in your area (hopefully there will be some response from local investors on this thread), try to get Home Depot to give you the names of some of their installers (they tend to make good handymen in my experience), visit your local REIA, stop by job sites as you're driving past and if the work looks good, get a card from the contractors, and as a last resort, start scouring Craigslist.You only need to find one great contractor.

Installation of a new one is easier too.

Don't believe any equipment will make it to this area of the house.Is this a DIY project?