With a standard order, it's impossible to agree on the placements. However, if you choose premium, the sites will be selected according to the requirements, and the guarantee of link retention increases from 7 days to a month (although in practice, if a link stays up for a week, it usually doesn't get removed). The premium service costs 25% more. Considering the already high price of the services, it ends up being quite expensive. But I care about where my links are placed. I have no complaints about the quality; the links are indexed quickly and bring in clients.