Yes, it means you pay total price in installments and no 'sood/interest' is added if you take up to 6-months plan.
For example, price for YBR-125 is Rs.129,900/-. For 6-month plan, your monthly installment is 21,650/- (so 21,650 x 6 = Rs. 129,900/-), whereas for 12-month plan, your monthly installment is 12,473/- (so 12,473 x 12 = Rs. 149,676/-), and so on.