Question: I only ordered 2 pieces but the cost of crating and shipping seems high to me...
Answer: I get this question often so here is the short of it. The cost of lumber has been increasing quite a bit in the last few years and though you are only ordering 1 piece of mirror 32" x 34" the same crate has to be built for it that could hold 3 pieces so you are absorbing the cost into 1 piece.
The example crate above shows the structure of the crate, but on top of that is a top lid and Styrofoam and this crate is built for 1 piece though it will hold 3 and its total weight without a lid is 34 pounds (thats without mirror). If I do not build a crate like this it will never make it to you. So though your mirror is 8 sf and weighs 16 lbs you are paying for shipping on 50 pounds.
The reason we sell 90% tiles from our shop is due to the lesser cost of shipping in boxes. We have been shipping for 13 years now and we have noticed an increase in lumber, gas fees and increased shipping of almost 20% in that time.
THIS IS NOT A REASON TO BUY TILES IF YOU REALLY WANT PANELS, JUST KNOW WE ARE NOT TRYING TO RETIRE ON CRATING / SHIPPING BECAUSE WE CHARGE YOU WHAT IT COSTS US.