Just ordered my diy set up from DIY Gear Supply. fabric, amsteel, poly thread, ridge line, etc all for $46. Everything but bug netting &tarp materials. The 1.6oz fabric is real nice. Joanne's couldn't tell me a weight for their ripstop when I went there either.
Have fun with it. Be patient, go slow. Have a stitch ripper handy. True for me anyway. You will be pleased with the stuff from Scott.
“Things are as they are. Looking out into the universe at night, we make no comparisons between right and wrong stars, nor between well and badly arranged constellations.”
― Alan W. Watts