Yeah, call around to some glass places and see if they sell screen material. I know a lot of people use CL Lawrence for materials, but I never used them. You can also get a bunch of stuff off amazon.
I’d buy pull tabs for like 10cents, corners for like 30 cents… but you can get pull tabs on amazon 100 for like 7 bucks, 100 corners for 17. Personally, I’d figure out what the most common colors are in your area and order off amazon. I’d carry mostly white corners but then I’d have a few almond and a few bronze. Pull tabs were always black and springs are always the same.
I’d mostly reuse the spline unless it was really sun worn, but again, you’ll have to figure out what the most common spline size is in your area. The screen place near me would always sell 140, but I mostly used 250.
For frame material, might be easier to get locally since I’d buy like 12’ sections. But again, check amazon. I didn’t usually stock a bunch of material and just buy it as I needed it.
Then for the uncommon screens, like the ones with spring pins, or something weird, having a local place to buy just what you need is nice.
Oh you can hit harbor freight and get a set of $0.99 picks and those are really handy for pull out old spline or pushing in new spline in the corners.
Here’s Marks video in case you didn’t see it.