celeste,
around $160, bought it from BP, that time shared with another mummy. Can get from the chinatown shop,

forgot its name, think Choon Cheong.
Kiddy palance also carries but more ex. There is a shop beside kaki bukit baby hyperstore that carries it but I don't know how much.
You need all 6 panels together? ok, need to go back and measure. The width is ok, but the length is a little long, so I stuff with pillows & soft toys.
Btw, its still 'movable' to a certain extent if the todd use strength to move it. 2 sides, I placed against walls, 1 side I place heavier obstacle so not so movable. HAHA... hope you understand what I'm trying to describe..
But for sleeping, can confine them within the space.