In this category are listed inexpensive web hosting providers that offer great services with budget and affordable prices. Some services have and expensive hosting plans, but all listed companies have cheap plans with price lower than $5-$7 per month.
Usually and such low-cost web hosting providers offer high quality service.
Low price just mean different marketing strategy.
Some companies have few customers, but expensive prices, some have low prices - but large amount of customers.
The cheap webhosting market in the recent years has grown tremendously; increasing competition in the segment. For the buyer, this has been a positive change with lower prices and increased capacity and services, but unfortunately some less serious actors have appeared on the market looking to make a quick buck. You can rest assure that these fly by night operations are not listed; only the providers that are well established and offer well credited affordable web hosting. You will simply get more for less.