I think most new "netbooks" have been converted into 11.6 form factor to include a proper full sized keyboard. The only real reason netbooks had 10" displays was because intel required it when purchasing an atom (along with their 2gb memory limit). Atoms haven't gotten any real architectural (IPC) changes since their release and Intel has been repositioning the brand/hardware towards tablet/phone devices. Since manufacturers have been freed from the 10" constraint, such most manufacturers have been building larger screened low end laptops which is really what the market wants. As such you might want to reconsider your options. Depending on the architecture of the Celeron, it may actually be faster and more battery efficient than an Atom. The options seem to be:

1/ Deal with an extra inch of real estate

2/ Buy a 7/10" tablet & add a keyboard. Some like the Asus transformer pad includes a keyboard dock. You can also try rooting/chrooting a linux distro onto the tablet all the bells and whistles.

3/ Buy used from e-bay