The window-mounted a/c units also seem to be the newest on the block.

If the units are smaller, that cost seems plausible, but would be on the lower end of the range here.Remember that is only the cost of the electrician replacing existing circuits and does not include the repair and repaint you will been to do to walls and ceilings (hopefully the electrician is not planning to surface mount).  

https://www.azcentral.com/story/news/local/gilbert/2018/06/04/four-story-city-gate-apartment-complex-draws-ire-gilbert-residents/642135002/“Gilbert, often central to feverish development in metro Phoenix, is in the midst of a months-long debate over a 249-unit apartment complex planned for the northeast part of town, with a decision quickly looming.Those living in the neighborhoods around Higley and Baseline roads, the intersection near where the complex is planned, are mounting a campaign against it.They've showed up to speak at multiple town meetings, swaying Gilbert's Planning Commission in April to vote against a conditional-use permit for City Gate Apartments.However, Gilbert's Town Council overturned the commission's decision in May with a 4-3 vote, allowing the project to continue.”If there’s one thing I’ve noticed in my many years of real estate, it’s that small towns like to remain small.

PARTIES:BUYERS: USA Regrowth Fund, LLCEFFECTIVE DATE:10/6/2018CONTRACT DOCS: DATES & DETAILSTaxID:532-09-00-224Subdivision:Old Mount Pleasant - DeerBlock/Lot:Lot 29 / BLK HCounty:Charleston Address:580 Center St, Mount Pleasant, SC 29464MLS#:18022835Contract details:Atkinson Designs | Designer Michael Atkinson, Assoc.

Mount Washington is a good rural area as well for rentals. 

I have firm for electric, telephone , internet and cableTV installations , also mounting plaster cardboard plates .

It is an expensive service starting at $700.00 for the truck mounted.

It was great having an in-unit laundry.The advantage is that it IS all one unit - no relying on shelves or mounting racks which might collapse or tip over.If you can truly find stackables (new?)

There are also small levels that you can mount on your hot shoe (flash connection) for the same purpose - and the 5D Mk III has an electronic level in the viewfinder too. 

Not a generalized trend - but I was looking at areas like schaumburg, hoffman estates, palatine, lake zurich, mount prospects, prospect heights, arlington heights, wheeling  etc .