Jane, another thing to consider is dithering. Don't spend too long searching or holding out hope of finding your perfect bushes. If you start now,
this year, with some that are smaller and more affordable, they will become what you want in time. If you wait to find or afford them, you are maybe missing out.
"The best time to plant a tree is 25 years ago, the second best time is today."
For the longest time, my mother and I wanted a hedge to screen out our neighbor's view into our
yard. They would spend an afternoon sitting on their deck, facing our yard
staring at watching our doings, creepy.
The ideal would have been to plant a mature hedge, and be free (from prying eyes) but the cost was prohibitive. Fifteen years later, and we finally had had
enough of it and got some bushes on Fall clearance at the nursery (still $25 a piece for 6 ft. arborvitae, in rough shape), and the only way it even worked at all, was that I built up a mound 4 feet higher to plant them into. It still took a couple years to fully block the view. If we had just gotten some 2 ft. shrubs, we might have had the hedge sooner, and for less money.