I wondered into my local JB at lunch time and noticed these were on sale.
The sleep covers are at normal price -
Black -
https://www.jbhifi.com.au/computers-tablets/all-computers--t…
Cream -
https://www.jbhifi.com.au/computers-tablets/all-computers--t…
My wife and I each have a reader and sleep cover and are enjoying them. I went for Kobo over Kindle based on reviews because I prefer open formats to proprietary formats in principle. Kindle is limited to the Kindle format books and the Kindle store while Kobo uses the generic epub format - so you can buy books from pretty much anywhere else. I buy my books from Google Play - and its a real winner being able to use the Telstra carrier billing from the discounted $30 sim starter packs that are so popular on Ozbargain. Doing this makes the ongoing cost of actually using your reader to read purchased books way cheaper on a Kobo then a Kindle.
I found the Kobo to be not very good, unresponsive and it had a cheap feel to it. Took it back after it crashed numerous times and bought a Kindle paperwhite from officeworks for $174. So far I'm having a much better time, although it is early days.
I also was able to put my collection onto the kindle with ease, just use Calibre.