Palmer Frosted Flakes Company offers its customers a pottery cereal bowl if they send in 3 boxtops from Palmer Frosted Flakes boxes and $1.00. The company estimates that 60% of the boxtops will be redeemed for the whole redemption period (2019 to 2020). In 2019, the company sold 675,000 boxes of Frosted Flakes and customers redeemed 330,000 boxtops receiving 110,000 bowls. The bowl cost Palmer Company $2.5 each.

What is the premium liability balance at 31 December 2019. Show workings