Unit Pricing Cuts Both Ways

I wrote glowingly of Woolworths's Unit Pricing scheme just days ago, and today I was pleased to see that ALDI's also has it. As an exercise, I decided to compare the unit prices of items on my grocery list, and this is the result:

Item                        ALDI's                Woolworths
----                        ------                ----------
Light milk                  $1.40/litre           $2.63/litre
Wholemeal bread             $0.28/100g            $0.59/100g
Free range eggs             $0.69/100g            $0.72/100g
Low fat yoghurt             $0.47/100g            $0.59/100g
Honey (squeezable pack)     $0.60/100g            $1.00/100g
Cranberry juice             $2.79/litre           $3.86/litre
Carrots                     $1.25/kg              $1.29/kg
Beans                       $7.00/kg              $2.98/kg
Cashews                     $1.74/100g            $1.86/100g
Kitchen towels              $0.75/roll            $0.95/roll
Vit B (Benifex/Berocca)     $0.35/unit            $0.50/unit
--- added 25/01/2009 ---
Pesto                       $1.53/100g            $2.16/100g
Toilet tissue               $0.50/roll (6 pack)   $0.41/roll (9 pack)
Green seedless grapes       $2.00/kg              $3.86/kg
Garlic                      $3.38/kg              $10.98/kg
Frozen stir-fry veges       $5.78/kg              $6.24/kg

I always knew that Woolworths was more expensive than ALDI's, but this was a real eye-opener. ALDI's has fewer brands, but they're cheaper than even the most inexpensive brands at Woolworths. Green beans are probably the only exception. It'd be very hard for me to justify a trip to Woolworths when ALDI's is open. Sorry, Woolworths.

I'll add to this list as I compare more items.