Seno, while obviously saving money is a good thing, if you really care about saving 10 dollars, your going to have a rough time when it comes to fiberglass work (my helms normally cost me about 100 dollars to make, including visor, and not including the hours of work I put into them). I wouldn't count on wal mart to put them on sale or anything, you might be waiting forever. IMO it stinks that it would cost 20 bucks, but you do what you gotta do....
On the other hand, my savings that I had on advice of my financial management teacher is all but slaughtered because I wanted some of adam's armor, and because I spend at least 100 per helmet I make.. and because a buddy wrecked my car and I paid for it... so I might not be really amazing with money... TBH if you pay me shipping I'd ship you some for the sake of the video, but the shipping might be expensive so even that might be a bad idea.
For the record, if either of you think my scout (which I temporarily hate and need to revamp) or MKV helms are of quality you find acceptable (ok it's not sigma quality but still) I would be more then happy to help you build your armor as long as you front the cost of materials, let's put SC on the halo map!
Also, if you bring me assembled peperuka and a decent supply of fiberglass and bondo, I would be more then happy to "mud" and sand your armor for you, as long as I don't have to pay, it's almost fun anyway, cutting and glueing pep is the anoying part.