Auto parts store
Auto parts trade is a huge industry with a turnover of hundreds of millions. And although car owners themselves have probably already stopped buying parts for independent replacement and installation (after all, modern cars are not the "Zhiguli" of the 1970s, and repairs require special equipment and qualifications), and branded auto repair shops have their own centralized supply channels - numerous repair shops regularly search for and buy thousands and thousands of auto parts.
This is due to the fact that “non-systemic” auto repair usually undertakes servicing of all brands of cars, which means that it simply physically cannot have such a stock of spare parts to satisfy the corresponding requests.
So what will the car service supplier do? That's right, search "on the Internet", that is, use a search engine: Google , Yandex or Bing .
There is no point in turning to the websites of car manufacturers - the absolute majority of "original" spare parts are manufactured by third-party companies in cooperation. Similarly, there is no point in searching for the necessary spare parts from such contractor manufacturers: firstly, they do not sell at retail, and secondly, you often will not even find their names.
That is, the supplier will look for online store of auto parts
Now let's put ourselves in the shoes of the owner of such an online auto parts store, who actually contacted the 2 index service with the problem of “poor visibility” of his store pages in search engine results.

Note that “website visibility” is a separate term, and this is not quite the point: most likely, the problem is that the pages with products of the online auto parts store are not indexed by search engines in sufficient quantities – that is why they do not appear in the search results.
First of all, let's look at Google Search Console (or Yandex.WebMaster, or Bing WebMaster ), the "Indexing" section. And yes - the graph shows us that out of almost a million pages, only about 40% have been indexed. That is, a potential buyer simply physically cannot find more than half of the goods presented in the store. What sales volumes can we talk about in this case?

How to index half a million pages?
Do it manually by adding pages to Google Search Console – will take several years (!) of working time if you only copy and paste links. Therefore, we turn to the service 2 index . ninja and choose the tariff: Black Ninja ($850, $0.0017 per link) allows you to index 500,000 links - this is what we need.

But even with such a powerful tool, it will take us 10 days to add links (50,000 per day) and some more time for the actual indexing - we remind you that 2 index . ninja does not perform indexing directly - it adds links to the priority task of search robots, and they, in turn, place pages in the index.
Therefore, we wait a little and evaluate the result of indexing acceleration. Obviously, 500 thousand is not a small number, so everything does not happen at once:

But now we have about 800,000 pages in the index that will be shown to potential buyers.
Of course, each of these individual pages will not have such a high traffic, but:
1. 800 thousand pages with even 10 visitors per page gives 8 million unique visits.
2. With a conversion rate of 10%, this is about 800 thousand units sold. The average cost of a car part is 10-12 dollars. We spent $0.0017 on accelerated indexing of one page (one product). ROAS indicator = 580,000-600,000%.

Conclusions
For online stores with a relatively cheap but large assortment, organic search engine results are one of the best, and most importantly, cheap, promotion methods.
The main problem here is the indexing of product pages by search engines, which the 2 index . ninja service can solve – quickly and for little money.