Look through the free ads etc, always people wanting rid of old mirrored wardrobe doors.
Strip the frame etc clean em up and taa daa big mirrors and nice and cheap.
Seen mirror doors in Wikes or B&Q or some such like cheaper than i could get the same size mirrors from the glass merchants before ( sale time prob )
Worth a look perhaps.
"Knowledge is knowing that a tomato is a fruit. Wisdom is knowing not to put it in a fruit salad" JIMMY'S GIMP