According to Wiki, Zelenskyy helped create his own political party in 2018.
At the time, he was the star of a very popular TV political sit-com.
My point - who would have benefited by selling the condo at a huge discount in 2013?
Not obvious - unless the issue here is about tax evasion by Zelenskyy, who was a moderately successful TV producer and comedian in 2013.
When I first heard about the war in the Ukraine, I read up on Zelensky and found that he had an oligarch backing him before he took office. I get the impression he was 'groomed' by this guy. It would be harder to find such articles now as the Internet is being scrubbed re Ukraine. Back then, the man was described as a Russian oligarch, but when I look today, I find a Ukrainian Oligarch. It could be he had both, or that they were pawns of the CIA.
At the time I read that article, I wondered if it was a sexual relationship. In the following article (paywall) there's a picture that looks like gay boy bands in the US, and his leather dancing you see in gifs on FR is not designed to appeal to women. So the article with the picture of the 'boys' (Zelensky and friends) details the time Zelensky spent living in Moscow as an entertainer.
Volodymyr Zelensky's Russian years
What seems to have happened re Kolomoisky is he backed Zelensky, things got worse for Ukraine and the oligarchs assets in Ukraine were nationalized, and now Z has fully turned on him. Or the CIA has turned against Kolomoisky and Zelensky goes along with it.
Ukrainian oligarch and former Zelensky backer Kolomoisky charged with attempted murder
But there may be another oligarch, a Russian, involved. As I said, the Internet is being 'cleansed' in some ways - content I used to find that I can no longer find.
Are you familiar with the Pandora Papers? Zelensky was one of 330 high profile people exposed for having off-shore assets. This was a problem for him because his campaign platform portrayed him as rising to defeat those with such assets. The following article provides an overview of Z's undeclared assets.This article is more than 2 years oldRevealed: ‘anti-oligarch’ Ukrainian president’s offshore connections
Luke Harding, Elena Loginova and Aubrey BelfordSun 3 Oct 2021 12.30 EDTVolodymyr Zelenskiy has railed against politicians hiding wealth offshore but failed to disclose links to BVI firm