On the secondary market, the KS1 putter from Costco has sold in excess of its $149.99 price tag, with some paying upward of $250.

The KS1, Costco's Kirkland Signature putter, can be customized with a weight kit that is sold separately. (Photo: Costco) But the second iteration of Costco’s golf balls caused massive problems.

Literacy Live Lesson 1 - KS2 / First & Second Level And don’t forget to come back to the BBC Teach website next Monday for two numeracy Live Lessons for KS1/First Level and KS2/Second Level.