The first and most noticeable benefit of investing in paid advertising are the almost instantaneous results. You can see measurable boosts within the hour upon running your first campaign.
It is also very important to plan for the long term and set a budget. Whilst paid ads can bring quick results, in addition they also need time and refinement to ensure you fully understand the trends of the niche and your audience. This subsequently enables your campaigns get the best results with the lowest CPCs.