The Dented Helmet can show you how to make an entire Mando suit from cheapo rubbermaid trash cans for under $100 for entire suit (including helmet) -- if you're not confident painting you can pay some one to do it and still save over most kits.
It would be safe to say that's still the same vendor. I've known about SF for years and this is the same exact style as you mentioned for their photography. Curious to know how much of those newer helmets are recasts..
Star Fortress (Thomas Ernie Scheuer) may be operating under the username "Stargates" on Alibaba. Stumbled upon his products, and note he operates out of the Philippines: