From an email I got:
<snip>
So this month, Wal-Mart Watch -- an organization DFA works closely with -- needs your help launching a nationwide project to test Wal-Mart's low-price guarantee once and for all.
http://www.democracyforamerica.com/pricecheckThere has been a lot of speculation about Wal-Mart's pricing tactics. Do they price nationally, regionally or store-by-store? Do they cut prices upon moving into a new community only to raise them when free of nearby competition? Do they lure customers with bargains on featured items only to stick it to them on more mundane goods? We need your help finding out.
http://www.democracyforamerica.com/pricecheckWal-Mart Watch has chosen five everyday household products, commonly available in discount and grocery stores across America. For less than $15 dollars, you can purchase these items and verify the date of sale and total price of each by completing an online questionnaire and mailing in a copy of your sales receipt.
Wal-Mart Watch has asked DFA to kick off this project quickly, before Wal-Mart has an opportunity to respond on the store-level. If you are willing to help in this important test, please make it a point to do your shopping within the next 48 hours and report your findings on the form linked below.
<snip>