All told, mine was more expensive, but that is because there was no plan and it evolved over time. I bought the sintra to use "as is" and lean against the fireplace mantle for "movie night" and storage other times behind the couch. It turned out to not be rigid enough for that so a frame was needed. I had the sintra and it looked good and didn't want a different screen surface. I found the 80/20 on here and gave it a shot.
I started with just a box frame for the sintra and still stored it behind the couch when not in use. That was good for a while until I found this thread (huge thanks to Highside) and got approval to hang it. BTW, I don't think I could ever do the BOC splining that Highside did. I know my limits.
I had to get the hinges, deadbolt latches, frame extensions, three way connectors and reinforcing aluminum pieces. I reinforced the bottom and top corners to prevent gravity from pulling the frame apart when down, and sides where ceiling extensions connect to the frame to prevent sagging when up.
While I was gathering the parts for the final design (and measuring and sketching for the 100th time) I decided to paint the sintra with one of the DIY mixes on here once I learned that my image quality could be mo' better (
to MM). That meant buying the Wagner sprayer and paint mixes. I also painted the frame materials white to blend in with the ceiling.
This all happened over time so the cost didn't seem to be adding up. Some of the costs are based on memory:
$60 sintra (cut to size and bought locally)
$100 80/20 frame (top, bottom, sides, corner connectors, gasket material, inside corner beveling and delivery)
$40 deadbolt latches
$20 frame extensions and connectors
$30 white paint for frame and corner/T/vertical reinforcement
$55 Wagner sprayer (on sale)
$40 paint mix
$3 black cloth hockey tape from sporting goods store (border material)
Of course, if planned in advance costs could be reduced. If you didn't want to paint, you could save $95 (sprayer+paint). If you want to paint you could use a cheaper substrate (TWH for $12) and save $48. Use TWH and if you have a sprayer save $100. Another alternative is to get stock aluminum tubing frame pieces without flanges from the online store and cut it to size yourself. Assemble the frame and screw the screen material to the frame. May save another $30-$40.
Do not let my wife see this post. She enjoys movies. Let her continue to.