Probably you can in a better market.
Right now people are not spending.
Be careful about Kegs for boilers. The ones that are seamed can come apart. A welder can make sure that never happens for a small fee.
As an aside before you start this process be sure that resale is not your goal.
Think about buying some one else's used keg based system.
What critical thinking would you have in your mind before you made the commitment to a used system?