Try and check if the product up for bid comes with any specific guarantee just in case any maintenance services can be obtained when needed. Bear in mind however that a lot of vendors are not able to provide any sort of services for the items they offer. If you are not up for the transaction without any protection, make sure you do not make any bid. Those who are employed to work at the government or at large organizations like IBM, Oracle and HP are offered lower price rates whenever they buy from some vendors. Trusting your intuition and gut feeling will prevent you from shopping for products at online stores you aren't at ease with.