NT253 Question about See Also resource

Kenneth Neighoff

I am currently working my way through, NT253 Miracles of Jesus! by Daniel M. Doriani. 

I do not have his commentary that shows up many times in the See Also readings. his commentry is only available as part of a set. I do not see that this set has been broken up for individual sale.  

I don't want to buy a set for his two volumes.  

Can this set be broken up?