Simulated test marketing involves presenting advertising and promotional materials for test and existing products to target consumers. Vendors claim accuracy within 10% of actual forecasts up to 90% of the time using techniques considered highly effective. Data was originally collected in malls but has shifted online. Simulated market tests cost $25,000-$100,000, much less than full-scale testing. Shelf set simulates product placement, pricing, and signage using virtual shopping to gather insights. Simulated testing is growing but companies remain cautious given failure costs.