Thanks for coming to this page but we have stopped giving out free downloads as we found out that our free downloads were marketed and sold at Carousell and kiasu parents forums for huge sums of money by some very entrepreneur people. As a result the sellers are profiteering hugely at our expense since they do not have any cost and also do not have to bear the risk of any errors. Thus we have stopped giving them out for free.
Wish you all the best in your Economics endeavour!
From management of econs.com.sg 2018