Bought 4 HD's 4 months ago from a guy that's out of business

What do I do now

Rear right shock has failed and causes massive wheel hop on freeway

Please advise where to go what to do in this matter

I am considering going to Sears and gettnig a pair of monroe shocks put on until such time that I can figure out what to do with these $100/piece shocks that have failed in the rear

Please advise
Chris