How they price it ?

New Year Day afternoon. Determine to do a posting today in my new site and I need to search for a subject to blog right ? Lucky me because I found something to write here while I did my routine grocery shopping at hypermarket before noon.

Let me show you a photo here ..................

mmmm.... why shampoo ?  The one on the right side is 400ml pack and the one on the left side is 750ml.
Which one you think I bought ? 
Above encounter triggered me to look for more such scenario in the store..... arrrrrrrrrrrrrr.... here I got 3 more photos to show you..............

2 in 1 pack, a promotion packing for this softerner. Must be very good offer.

Curious to know how much saving I got from this special offer so I look to the next display, the single bottle pack.... mmmm..... this was what I found out ! (both are 2 liter type)

If you think the promoter or planner is stupid than seriously they are not. Look at the next photo I display here for a pack of 5 liter offer. The price offer here for bigger size packing are logic and it came with extra gift too.  (ooop...... how come this logic not apply to the shampoo label I shown above ???)

Lastly, this type of product pricing always make me mad,. Just take a look at the price publish by the manufacturer or hypermarket to consumer for the refil pack and ordinary pack.

Not to forget to mention here is the refil pack only 900ml as for the complete bottle it contain is 1 liter.

Is this the way to guide consumer to be enviromental friendly ?

I wonder this form of marketing strategy only engaged by the hypermarket I patron or it happen to the other 2 competitors of it too ?

Does this happen to those store from other countries too ?