I understand that the prices shown to respondents are based on certain percentage increase or decrease from the average price. However, in the Sawtooth Research Paper series "Three Ways to Treat Overall Price in Conjoint Analysis", one of the challenges mentioned is that the resulting prices has to be rounded to the nearest $100, or made to end in a 9 for consumer goods. I am not sure I understand this correctly. Does this mean I cannot use prices with decimals? For example, if the price is $12.25, should I round it to $12?