Current listings on eBay for this size / price include tread pattern copies for Yoko MT, typical MT (older BFG MT style), Mickey Thompson MTZ, and apparently he's out of stock, but in a few weeks he'll also have the Simex Centipede copies available. Also BFG AT and a couple of other styles too. Ignore the size availability chart on the insa site, as the range has just expanded.
They're apparently a bead to bead remould (not a re-tread).
I was tempted to give them a go for some play tyres, but I just picked up a used set as a bargain on eBay.