I buy some of my stuff from this web site:
http://beprepared.com/
when you get there do a search for mylar bags, oxygen, buckets and even food.
If you have more money this site has a better quality food pack and ready to go:
http://www.efoodsdirect.com/
I also got a free Berkey from this site when I ordered one year for one person prepacked meals. Berkey is a water filter.
I did a google search for mylar and got this:
http://www.google.com/search?q=mylar...ls=org.mozilla:en-US:official&client=firefox-a#q=mylar+bags+food+storage&hl=en&safe=active&client=firefox-a&hs=ain&rls=org.mozilla:en-US:official&prmd=ivns&source=univ&tbm=shop&tbo=u&sa=X&ei=gJDWTfyRCcmutwfZtIy0Bw&ved=0CG0QrQQ&bav=on.2,or.r_gc.r_pw.&fp=5e329e188693deb6&biw=1280&bih=889
If you have any more questions, I will be glad to help.
DJ