Why Mall Showroom Price Tag 1 rupee less | Psychological pricing strateg...

Hello dosto is video mein ne bataya hai ki yeh mall showroom mein jab bhi aap shopping ke liye jate hai toh aapko waha pe price tag pe 1 rupee less price kyu dekhaya jata hai jaise ,99,199,249,499,599,699,899,999 etc.