“Swiss Army Knife”
Purpose: A cheaper alternative to private proxy – static (non-changing) IP address.
Advantages: A large number of IP addresses at a relatively low price.
Disadvantages: Some providers set stricter limits on a number of simultaneous connections and traffic volume. Some providers also disable support for some protocols (e.g., SOCKS).
Things to consider: The proxy is highly likely to be banned in the target site. Therefore it is not recommended for long-term goals (e.g. for account growing, level-up etc).
Solution: If there is no free testing before buying, check with the provider whether his proxy can work in your target site.