[wparsons]

If it's a consistent wobble/vibration, it's probably not the alignment, a wheel bearing, bent knuckle/hub/axle, etc. It's most likely a bent wheel or a missing weight.

A bearing would grind and feel loose, but wouldn't be a consistent wobble.

A bent knuckle/hub/axle stub up front would put the alignment out, but again wouldn't wobble.

Alignment would pull/scrub, but again wouldn't wobble.

It's very possible to bend a wheel and not be able to see it by just looking. The only way to tell for sure is to rotate it and measure for any runout. If you take it to get balanced they'll be able to tell you right away if the wheel is bent or not.

As for cost, insurance would cover this. It's definitely something you want to get fixed properly just in case it's something much worse than just a missing wheel weight.