Ads served in Yandex.Direct are payed for when users clicks on your ads. Your ads start displaying after they pass moderation and funds are added to your campaign's account.
Funds are deducted from your account for every click on your ad or vCard. The minimum cost-per-click is 0.3 rub. without VAT (value in a different currency), and the minimum payment is 300 rub. without VAT (value in a different currency).
Information about factors affecting the price-per-click can be found in the How much does advertising on Yandex.Direct cost? section.
To estimate approximate expenses on advertising based on the subject matter of your Yandex.Direct ad, please use the Budget Forecast instrument.