Selvarin
Explorer
Companies like Amazon.com, buy.com, etc. can afford to keep costs lower since A) they buy in larger quantities and B) people manage to get around local sales tax by ordering out-of-state (in the US) or out-of-country altogether (e.g., Europe). Depending on the country, sales tax and import duties can rack it up. Until an internet tax comes into being, consumers will continue to benefit from this. Who knows, maybe it'll bring a change in the way these taxes, etc., are applied.