Republican Paul Manafort is not the only one who has been making millions off the Ukrainians for years. Democrats have also long been contesting that ground.
The Wikipedia entry on Schoen says he was making $40k a month from Pinchuk starting in 2000. That's the almost $500k annually "to start" Schachtel mentions in his thread, so yeah, big money for nearly 20 years straight. Schoen, of course, is a Democrat and was closely involved with the Clintons in the past. The Clinton Foundation itself is said to have received as much as $25 million from Pinchuk.