The flatter splitter used to be about £85 from OPC, but that part number no longer exists and has been superseded by something which is now £220 ish. Disgraceful price-hiking.
I bought one of someone on here that they had bought for £150.
I get few a fair amount of them, but taking twice as much care now (making my annual splitter bill the same as before)
If your looking for a secondhand one there is one in a some woods in France, although it has been ran over by Cunno!