Type the correct answer in the box. Spell all words correctly. Andrew sells ball pens that have a radium body. This is the most unique feature of his product. Andrew charges a premium price for these pens because of this feature. Which strategy is he making use of? Andrew sells ball pens that have a radium body. This is the most unique feature of his product. Andrew charges a premium price for these pens because of this feature. He is using a BLANK strategy.