We have been searching everywhere for 3x12 bright white subway tile in a matte finish and we cannot seem to find this anywhere!

Does anyone know where this can be purchased? It seems like a standard thing but all the box stores including our local tile providers had nothing in this 3x12.

If it can't be done we understand which brings us to our next question, where can we buy standard bright white 3x6 subway tile in a matte finish for the best price? Thank you so much in advance.