If you are talking about star fortress productions then no absolutely not, I had been thinking about purchasing a suit of arc trooper armor from the site a month back. But thankfully I did a little research and the site came up as a scamming site that was flagged on the 501st legion.
Star Fortress is a bad idea. The product is inferior and inaccurate that is if you get it at all, and the quality is poor. There is other good reasons to not buy from them if you wished to do some research on the owner. I will leave it at that but I would not want to give them my money.
Spend time here and learn about who what when and where. Build up your post counts and time in the forums so you can utilize the Cargo Hold.
I almost made the same mistake with star fortress. Glad I started checking on him first. As far as a helmet goes bobamaker came highly recommended by Christian from Man of War Studios. (I just bought a Jango arena jet pack from MOW). A little pricey but worth it. He also has a website that you can order directly from bobamaker . But if your on a budget and want to paint and weather on your own Cruzer is another good source. You can also check the cargo hold even though your like me right now and you can only view the threads you can always message the members directly.