since when!It would be really weird if all the people in a room had the same heads. so if a head is sold in a head shop it is removed (or at least has a note that it's not for sale). Your head is unique to you, that why there is an official rule 1 head per player.
On the other hand, this sentence is true, no toricredits (tc's) are needed.
guys may i use most of the heads here or do i need to pay for?