Yes it is and "jilet" was inspired by a brand name.

Sana mesaj gönderemiyorum çünkü kontörüm bitti.

It is not only kola that we were inspired by a brand's name. We also say jilet. Can you recognize the brand without checking the dictionary?

I said pahalı was derived from paha and paha is omited and so is "paha biçmek".
Paha=value, price >> omited (forget about it)
Paha biçmek = to value, to set price >> omited (forget about it)

If I had known that we are going to talk about words that have been omited then I would not mention them. The word paha and its verb version paha biçmek is omited because paha is replaced with fiyat and değer and its verb version is replaced as well.

Is it still confusing?

1. "-e değer biçmek" = to value, to set a value
2. "-e fiyat biçmek" = to value, to set a price
3. "-e paha biçmek" = to value, to set a value

Number 3 is omited from language. If you read my earlier messages you will also see that I said it was omited. So, if #3 is omited (except idioms) what do we have left? Simple. This is left:

1. "-e değer biçmek" = to value, to set a value
2. "-e fiyat biçmek" = to value, to set a price

This is exactly what I said one reply before.

No, brands don't change. It writes coca cola on them. Exactly for this reason people started calling this drink "kola". Actually at first they called it "koka kola" and then it become shorter as the long version was silly.

Evet.

There are price comparision websites. Try these:

http://www.expedia.co.uk
http://www.lastminute.com
http://www.thomascook.co.uk

It takes the case suffix but the verb should be "değer biçmek" or "fiyat biçmek".

-e değer biçmek
-e fiyat biçmek

I have no control over the dictionary. I haven't written or revised it.