120 slots, same as the number of slots you can buy with coins. 90 slots from SoA and then 30 slots added with MoM. None was added for SoM. The only vault spaces that require you to use TP are the ones added after MoM.
Originally Posted by TungstenVeteran
"Everyone's got one. Better to be a smart one than a dumb one." - me
"It's people like you that [I]think[/I] you know everything that give those of us that [I]do[/I] a bad name." - me
"Eat, drink, and be Merry, 'cause Pippin was a fool of a Took."