I think it depends on when the bass in question was manufactured. Warwick seem to go through phases with their specifications.
Nowadays, the general difference that I can see between Teambuilt and Masterbuilt is that Warwick limit the body woods and finishes available on the Teambuilt, along with the use of Ovangkol necks and nickel silver frets on the Teambuilt vs. Wenge and bronze frets on the Masterbuilt.
i.e. they keep the good stuff for the Masterbuilt pricing!
Edited to Add: Bronze nut on Masterbuilt vs. Tedur Nut on Teambuilt.
If you're referring to this in the For Sale section, the body wood is Pommele bubinga, which would not be available on the current Teambuilt versions.
I don't believe you can customise Teambuilt versions either. Certainly the price lists on the Warwick site suggest this is the case but others may know better.
Perhaps you could ask the seller to confirm the serial number and then insert that on the Warwick website to confirm the specification and the year of manufacture. Looks a nice bass though...