This abstract word contributes much to the prevalent habit of preferring abstract roundabouts to direct speech. See ABSTRACT WORDS.
We would point out that availabilities of this particular material are extremely limited. (. . that this material is extremely scarce. )(On the unnecessary particular, see PARTICULAR.)
A despatch has been sent requesting information on the availability of the facilities required . . . (asking how far the required facilities are available.)
The actual date of the completion of the purchase should coincide with the availability of the new facilities. (The purchase should not be completed until the new facilities are available.)