It was decent, not that good. There are better fanmade options available. The dome was super thick and had a gloss finish inside, instead of the accurate matted fiberglass. It's an ESB helmet but they lazily added a couple of ROTJ reveal greeblies to the forehead.
I have the Anovos Vader... it's a nice "hybrid" of an ESB and ROTJ, IMO and can go on either costume. It's still the nicest (non-ANH) licensed helmet made, and it was a STEAL when it originally came out for pre-order. I think around $350 or so? Considering the Don Post fiberglass Deluxe ESB Vader was selling for $1,000 in 1995! And the Don Post had the reversed face paint scheme.
The best VALUE IMO was the PCR ANH Vader. That thing is gorgeous and I'm glad I snagged one.
There are more accurate ESB/ROTJ Vader buckets here at TheRPF, but a fully finished/painted one is still a labor of love and $$$