Each book cost S$11.00. Two books cost S$18.00. Three books cost $24.00. Please make your cheque payable to "Ong Eng Jit" and mail to #08-38 Toh Guan Center, 21 Toh Guan Road East. Singapore 608609. Remember to include your address and phone no. For more information, you may contact the author: Mr Ong Eng Jit at 65-98816582, 6-016-7263179. Or email to: firstname.lastname@example.orgPse do not email to this ad's email address. Thanks.