Based on our experience with advertising:
1,000–2,000 rubles is the minimum budget. With this budget, the maximum you can find out is the average cost per click on warm segments of the target audience.
3,000–5,000 rubles is also a minimum budget, but you can already get the first applications/sales. However, you will be able to test no more than 2–3 audience segments.
10,000–15,000 rubles is the optimal budget for conducting a latest phone number database test campaign and obtaining results/sales.
20,000–60,000 rubles is the optimal monthly budget for advertising in social networks to achieve stable results and return on investment. This budget is suitable for most niches.
Please note that in many areas of activity, the social network advertising system gives priority at the auction to those advertisers whose budget is over 60 thousand rubles per month. If your budget is less, then you will have to wait longer for effective applications, since social networks will not give you the most ardent buyers.
Analysis of results
After launching the ad, you need to wait a few days. Ideally, you should allocate a week for one hypothesis. The campaign does not always “take off” immediately. You need to give the system some time to speed up, “self-learn” and start optimizing impressions for those people who are most likely to show interest in the ad.

If you receive few impressions, for example, no more than 2,000, there are three possible reasons: low bid, narrow audience, low ad rating. Accordingly, you need to increase the bid, expand the audience, or change the creative.
CTR shows the audience's reaction to advertising creatives. CTR of 0.65–0.8% is a good indicator for targeted VK advertising. CTR of 0.4–0.6% is an average indicator. If it is lower, then you need to experiment with other ad formats, audiences, images and texts. When paying per click, CTR directly affects the cost. The lower the CTR, the higher the price per click. When paying per impression, the higher the CTR of the ad, the more clicks the ad will receive per 1,000 impressions and the cheaper the price of each click.
If there is a noticeable decrease in target indicators, i.e. there are fewer clicks to the site, calls and applications, then it is time to change the audience or creative. Do not forget that targeted advertising can work for the long-term perspective of deferred demand. First, you need to win the subscriber's trust in order to convert him into a client.
Important point! As practice shows, when a client is dissatisfied with the results of targeting, during the investigation of the reasons it turns out that he is dissatisfied with his sales department, which does not pick up the phone, does not call back, does not respond to requests for more than a day. If you want to receive a large number of leads, then first analyze how your sales department works, and whether it can process them efficiently without missing a hot target audience. To do this, you need to automate the sales department using a CRM system and end-to-end analytics.