So, how much?
Tagpila?
Your sentence pattern starts with this word and you but the subject afterwards.
This - ni
That - na
Piece - ang buok (as with all bisaya words this is split into each vowel sound, bu-ok)
Kilo - ang kilo
Put it all together and if you wish to ask 'how much per piece?'
Tagpila ang buok?
All good hagglers start high so the price will be too high. So let's haggle.
Expensive - Mahal
Tagalog speakers amongst you will already know the word mahal as it means 'love' but in bisaya it means 'expensive'. To me this makes using the word a little uncomfortable. Let's emphasise what dialect we are using and use add the word for 'very'.
Very - kaayo (ka-a-yo)
Unlike English, the word for 'very' is put afterwards. So we end up with :
Very expensive! - Mahal kaayo!
Eight words in all, but words you will use again and again. Get cracking.