These aren't passive sale domains, you're going to have to start contacting endusers to get a sale.
GoldFonts.com: $50-$150
CreditBullet.com: $50-$xxx : It's a brandable, it's going to require a decent sales pitch to spark interested.
"I own CreditBullet.com and it is for sale" will get you nothing.
"If ever your organization was interested in creating a unique brand for itself as many of your competitors are already doing, I believe CreditBullet.com would be an excellent choice to convey to your prospects that expedience is the primary virtue when dealing with __currentcompanyname__ - You'll definitely set yourself apart with this meaningful, memorable and unique brandname. I am willing to offer this to your right now for $1 million dollars"
I just made that stuff up off the top of the head, but something like that could spark some responses.
I don't see any value in OpenSettings.com but it could have its place out there, but nothing that I personally know of.
OpenSettings.com could be worth a decent amount if an optimized website is placed there. If I were interested, I'd buy it for $12k if that's what the buyer wanted.