Q&A

first- we will assume you have a wheel bent- to verify this, move the suspect wheelto the oppisite side of car and on the rear. if this vibration moves when you do this (feels like it is coming from somewhere else), then replace wheel. now for number two- does the vibration occur at a certain speed (say between 30-35 mph or another speed parameter). if this answer is yes and it does not happen at all speeds, you have a tire problem, not a wheel problem. for clarification- a tire causes a "single speed vibration"
a wheel cause a vibration at all speeds.
hope this helps!

See if you have a full size, matching spare tire. If you do, exchange that with the bent rim and just get a generic, cheap steel wheel for the spare.
If the spare is just the donut type, you might be able to find a good condition matching wheel in a salvage yard for cheap.

Zee

I'm not surprised, based off your previous question and your description of your vibration concern. I would personally probably move the "bent" wheel and tire to the back for now, and then acquire a single wheel to replace it when you are able to locate one (salvage yard, etc, like Zee said...)

Clearly, you can see a bad wheel when you put it on a balancer and see the excessive bend/movement.

Replacing all 4 wheels...well...probably not necessary. I suppose all 4 wheels could be damaged, but it's far less likely. So a fair skeptic thought.

Thanks for coming back and reporting...