I can share my experience at the expense of different ways, including different marketers and setting up advertising. Different advertising tools have different budgets. We spent 20% of our budget on Adwords and other PPC marketing tools, the effect was, but it only paid off, the profit was zero (Thank you for not at least a minus). Once passed this link (I saw in advertising ) bsg.world/en/products/bulk-sms/ decided to try, these prices were average, not as big as those of competitors, but still, he hesitated for a long time and tried, now the growth is better than through AdWords, at the end of the month I will share the result.