I have 30 clear flemish glass blocks for sale including the rods and mortar and kit (with installation guide). I bought them for £220 (they are very heavy and that was mostly postage!) They are all still in bubble wrap, brand new.
from http://www.glassblockoutlet.co.uk/designs.html
They are 190 x 190 x 80mm.
pm me if anyones interested!