This is a good base product, getting you all the major parts of a furnace for less than your are likely to buy them seprately.
I watched a few reviews before ordering this. I am happy to see some things have been fixed such as retention hooks for the insulation in the lid.
The unit and regulator are very good for the price. The ceramic blanket and fire brick seem decent quality.
I added an additional layer of ceramic blanket to the lid, this may not have been necessary but helped seal the unit.
Biggest issue is the lack or Pre-Applied or included Ceramic hardner. This should be included as without treating the fibre its releases very dangerous fibres during use and its likely to be easily damaged. On top of the hardner, a furnace cement would be nice, not required but nice to make it more durable.
The included tongs are almost useless, only any good for dropping metal into the crucible. you will need to make or purchase crucible lifting tongs and pouring tongs. I made mine out of the 20mm flat bar for very cheap.