Mod edit: I have removed the Everton availability comments - to avoid any further confusion.
From what I can see, there are only Disabled and Ambulant Disabled tickets left. Hopefully Y1 will be opened soon.
There are still 500+ unsold in that upper tier for Everton. I don't know how the finances work (i.e. do the Albion have to pay for the whole block?) - but, the club might well be more cautious about over-committing for Forest.