One bartender, who provided The Washington Post a copy of his private Instagram messages, sent a query to one account about the cost of a fraudulent vaccination certificate. The response was immediate: The price was the equivalent of about $25 and the bartender just needed to provide his personal information. The bartender spoke on the condition of anonymity to discuss engaging with an illegal operation. The increase in the number of people selling bogus vaccination certificates comes as Moscow has ordered 60 percent of workers who interact with the public — teachers, taxi drivers, salespeople and others — to get vaccinated or get different jobs. Their employers are subject to hefty fines for noncompliance.