I use
this $6.99 Kindle 4 cover with my Kobo touch and it fits the kobo perfectly. The only problem is the the top right elastic obscures the power button and it is kind of inconvenient to slide it without pulling the elastic, which I do not mind. I do not care to spend ~$25 for a specially designed Kobo cover.
Anyone know any under $10 covers for the kobo touch? Thanks.