Is it possible to buy a tax lien from someone else in Washington DC?

[Julia Aberdeen]

There is a property that I'm interested in which had its tax lien sold at the Washington DC tax sale in 2022. The foreclosure process hasn't been started yet. If I contact the person who bought the tax lien last year and they wanted to sell it, would that be legally possible? If you owned a tax lien in DC, what price would you sell it for given how much you've already put into the tax lien?

Is there anyone with specific experience in Washington DC that has any insights?