There are many possible permutations here. I'll try to choose the ones that are closest to your words. It's debatable whether "Shampoo" should be capitalised. If "Stylo Shampoo" is considered a brand name then it's OK to capitalise. If "shampoo" is used generically then you shouldn't.
"You need to pay" is grammatically fine, but it's not the most usual way of saying how much something co