Don't some of you guys read? I swear some people read half the story and jump to Nitromater to give thier 2 cents before they read the enite story and think about it for a second. Cory is not buying the stuff, he is leasing it. Similar to how Bazemore leased his deal out years ago. It's probably a race to race deal, where the lease is $XXX amount per race for the rest of the year, or whatever the term is. I assume it is becasue Cory does not have the funds to buy a team outright for now, but with sponsor money coming in, he can lease the stuff from Don and continue on without missing any races.
Also, if Cory matched his lease term with the sponsorship term for when his sponsorship is up, (or Cory looses his sponsors) Don gets the stuff back, and Cory is not stuck with a top fuel team he can not afford to run by himself like he would be if he bought it. This deal makes a lot of sense to finish out the season with.