It would go a long ways if a vendor would just communicate a long wait time such as Modelhaus has. I don't think any of us minds the wait, these folks are independent and not Amazon and in many cases have actual day jobs. But just posting an estimated wait time would be helpful.
Promo wheels are all one unit with a thicker axle. On the other hand, the full wheel cover requires a wheel back and uses the thin axle. This is what originally came in model kits whereas the promo cars had the 0ne piece promo hub/thicker axle.