Originally Posted By: 147_Grain
Perhaps the extra $2.50 per quart for EP goes towards the 15K Warranty and eye-appealing label on the bottle.
Originally Posted By: dparm
I've noticed that EP almost never goes on sale and rarely applies for any promos (5qt + filter, etc).
Agreed. I've never once seen it on sale, at least not at any metro-Atlanta Wal-Mart store over the past 5 years. But, then again, I've only looked for it and bought it about 4 times over that period, so maybe I missed some. When I've happened to see it on sale at any retailer other than Wal-Mart, the sale price was still a couple dollars higher than Wal-Mart's regular price every single time.
Perhaps the extra $2.50 per quart for EP goes towards the 15K Warranty and eye-appealing label on the bottle.

Originally Posted By: dparm
I've noticed that EP almost never goes on sale and rarely applies for any promos (5qt + filter, etc).
Agreed. I've never once seen it on sale, at least not at any metro-Atlanta Wal-Mart store over the past 5 years. But, then again, I've only looked for it and bought it about 4 times over that period, so maybe I missed some. When I've happened to see it on sale at any retailer other than Wal-Mart, the sale price was still a couple dollars higher than Wal-Mart's regular price every single time.
