Again, for less than cost of blinds some times but certainly a lot less maintenance than blinds and, as mentioned, for some stylings blinds just are not the right fit and glass treatment can be a nice improvement, and improved showing/ user experience = $$$$. 

No programming of any kind, this (data input and treatment) was pretty much some excel work except for the word cloud where I used a software for the data treatment (the ref is in the credit slide).

They have touchy, picky macerator toilets; many areas and marinas are strict (NDZ) no discharge zones so you can't use an onboard waste treatment system - instead you have to use a tank and have regular pump outs.

This isn't a business, this is opportunistic treatment of old people in need.  

They just needed a really deep cleaning and treatment with old english. 

I always cover all my windows with inexpensive window treatments for privacy and give the illusion of someone living there. 

You don't have to worry about unexpected costs, you get the set it and forget it treatment. 

Yes there are world class hospitals and medical schools there and I know there will always be millionaires and billionaires who fly there for treatment and cash pay it.

Do you mean for substance abuse treatment?

One exception--termite treatment in advance to prevent future infestation--that won't fly IMO.Remember, in any negotiation, the one who wants it most LOSES.