We wanted to purchase some Polymer Oven Bake clay since it's more appropriate for this sort of thing we were going for. The product comes in a weight of 57g; so when you plan to buy this, don't expect alot. The product is is over 4-5 cm in height and just over a centimeter deep; which doesn't give you alot to work with, so if you're after something for a large scale work, be prepared to purchase far more than just 1 block.
When it arrived it wasn't as pictured in the photo, which is slightly misleading. This is what it looked like as delivered:-[...] However, it is still exactly the same product despite the change of wrapping, so this didn't bother me much.
Overall it's a pretty durable clay. It can be continously molded without drying out unlike normal clay; and the Oven Bake allows it to be created in an average family home.
Great for novices and amateurs; intermediates may want to purchase in bigger bulk.