Two years ago, we were looking for artificial ice for a drinks shot. We purchased a variety of cubes but couldn't find anything that remotely resembled the kinds of ice cubes we'd seen used by established drinks photographers, and then it became clear (no pun intended) that most of those were US based.
We scoured the net, and eventually found what appeared to be the only high quality fake ice in the world (maybe we just stopped looking once we found it?) and began the purchase process. Now some of you may know the firm, and while we have nothing negative to say... as their acrylic (or artificial) ice is beautiful, we won't name them.
Our quandary wasn't the price of the ice, it was the price of postage from the US, so our search began again. There were a variety of make your own guides, but none were producing a good quality finished item, almost all of them producing a cube containing globular bubbles - something usually resembling a lava lamp.