The investors bidding in the upcoming share sale of local wine maker Todoroff will be allowed to sweeten their offers during the book-building process, said Benchmark Finance, the brokerage in charge of the IPO. The investors will be allowed to modify only their price offer but not the amount of shares they are bidding for. The Apr 17 IPO will comprise 800,000 shares from the Todoroff stake held by BenchMark Group. If the IPO is oversubscribed, another shareholder - BG Immobilien, will float 300,000 of its shares.