01What data do I need?+
Product × day (or week) sales for the last 12 weeks or more: units, net price, list price, campaign flag and unit cost. A CSV export is enough. We never need customer names, addresses or order numbers.
02How accurate is it?+
We don't know yet, and we won't give you a number before we do. We are building a blind backtest on past decisions with public outcomes: the model is developed on 26 of them, and the test set is sealed before it runs. We will publish the result, good or bad, next to what a simple rule scored on the same cases. In a pilot, we first run one of your own past campaigns blind so you can see our miss before you trust a new run.
03What does "synthetic market" mean? Do you make up data?+
No invented customers, no invented sales. The market is synthetic; its behaviour is yours. We fit how your market responds (price, promotions, the weeks after) to your own sales history, then generate 200 plausible versions of the coming weeks from that fit and play every version of your decision in the same 200. Where your history is too thin to pin an effect down, we use published ranges and say so on the run.
04Isn't this just asking an AI what shoppers think?+
No. Jonbar is not a survey and doesn't ask an AI to play your shoppers. It estimates how your market responds from your own sales history (price response, promo lift, the dip after a campaign) and runs your versions through that model.
05How long does it take?+
A pilot takes two weeks: the blind test on a past campaign first, then the rehearsal of your next one.
06Does it work for Trendyol and Hepsiburada sellers?+
Yes, that's who we're building for first: sellers on Trendyol, Hepsiburada and Amazon EU, and DTC brands. We read marketplace-funded discounts as their own column and flag them, so you can see where the price moved without your decision. We have not validated accuracy on Turkish data yet; your pilot's blind test is where that happens.
07What does it cost?+
The pilot has a fixed price; we share it when we invite you from the waitlist.
08What happens to my data?+
It is used only for your runs, isolated from other customers at the database level, deleted on request and kept no longer than 90 days. Runs use no AI language model today, so your data is not sent to one.
09How much of this is AI?+
Less than you'd think, on purpose. v0 uses classic demand models (price elasticity, promo lift, pull-forward, post-promo dip, cannibalization) plus a simple competitor rule. We'll add more only when the backtest shows it helps.
10Can't I just A/B test the campaign?+
On a marketplace you usually can't show two prices or two campaign mechanics for the same product at once, and peak campaigns come once a year. Jonbar lets you compare versions before the one real run.
11What happens after the pilot?+
You keep the decision memo and the blind-test result. If it was useful, we agree on an ongoing plan for your campaign calendar; if our miss was too big, you'll know that too.