I met Keh Choon Wee (blog) again this year at STGCC 2015. I was interviewing him on tips for setting up booths at the artist alley.
He passed two sketchbooks to me, K Vol 3 and Vol 4. Every year, he would compile his personal sketches into a sketchbook and sell it at the Singapore comic con. Each paperback sketchbook has 48 pages and about A5 size. The paper quality is fantastic.
As usual, there are his character designs and some fan art pieces. Game of Thrones is rather popular and he has two huge elaborate drawings for that, one featuring all the male characters and the other with only female characters. It's weird to see these seemingly scheming characters in their cutesy versions. LOL.
You should be able to buy these sketchbooks at Basheer Graphic Books. Vol 3 is SGD $18 and Vol 4 is SGD $20. They are also available at GnB Comics.
International readers can contact Keh on Facebook to order.