Even though the pictures are very small and difficult to see details clearly, the rifle looks fine to me.
There are some minor critiques I could point out like the lock panels are too wide and the hooked breech to standing breech match up isn't the best. These are cosmetic issues.
The hammer on the lock is similar to what Art Ressel developed for his Hawken kit as well as what Ozark Mountain Arms used on their Hawken. I can't tell whose lock is on the rifle.
The rifle appears to have a single trigger. This is not common, but at least two surviving Hawken rifles have single triggers rather than than double set triggers, so a single trigger is HC.
If the price is reasonable, it's probably a good buy.
As I stated before, I don't believe Tom Faux ever worked as a professional ML builder, and I wouldn't expect his rifles to have any collector value.