Biden left office with a mortgage on his house. If he was "selling influence", he was really bad at it. After he left office, he made money on speaking engagements and a big book deal.
Unlike Donald Trump, who has never revealed his sources of income, or his income tax records, all of Biden's income tax records are a matter of public record, and his net worth has been reflective of the tax returns he's made public.
Ditto Bill and Hillary Clinton.
The guy who has repeatedly been shown to be lying about his sources of income, his net worth, and who he owes money to, is Donald J. Trump. With the current charges the Trump Corporation is facing in regards to tax evasion, and illegal tax avoidance schemes, all of that may now be coming crashing down on the entire family.
A lifetime of fraud and financial malfeasance is now coming to light, so it's not surprising you're screaming about the financial crimes of Democrats. Too bad the facts never back up your lies.
