Royal Oak stealth price increase

An evil day...

I stopped by my local Wal-Mart to see if they had restocked their Royal Oak Lump after the winter absence.
Last year they raised the price from $6.37 to $6.47, (not a big deal at 2%)

The price was the same as last year at $6.47, but the familiar red bag had a slight difference at the bottom.
Instead of "10 lbs." all of the bags read "8.8 lbs.".

It works out to $.74/lb instead of $.65/lb., or a 14% price increase.

I guess they worked out the marketing plan, but I would rather have seen them go ahead with a price increase and stick with a 10 lb. bag than try slip it in under a cave-in to the metric system. (4 Kg. bag)