There are rarely real deals on decent product for front projection. The market is a bit too niche to have gone that route and the margins aren't huge. So, selling screens or even projectors at a phenomenal price doesn't make much sense.
That said, have you considered a seating distance and screen size? Is your room really dark with dark paint/no windows/dark carpet?
If so, I would shoot for about 10" of diagonal for each foot of viewing distance. If you have two rows, a compromise size between the two rows may make a lot of sense.
Calling it a 150" diagonal, 16:9 aspect ratio screen and using a fixed frame fabric screen to allow the speakers to go behind it...
I would go to Seymour AV and get their screen.
Seymour AV is the premier manufacturer of acoustically transparent home theater projection screens in the world, maintaining the highest standards in projection screen innovation, design and craftsmanship
seymourav.com
Their 130 or 140 screen is likely ideal for your room. Preferably using the uF material.
It's about $1,850 for the following:
H130: 16:9 130”w (149.2”d)
Center Stage UF only
Premier 3.3” Frame
About $140 for the 160" diagonal H140 model.
This pairs very well with a high end projector in a good room.
If budget is a bit tighter, I can say that I've seen the JVC RS540 on a 135" diagonal Silver Ticket AT screen and it really looked solid in a decent room.
www.silverticketproducts.com
But, I definitely lean towards Seymour over Silver Ticket in terms of overall quality.