SAFEty first.. (Score 1)

hm.. this makes me wonder.. how can the buyer know exactly, which retailer to trust? should they trust a certain retailer because of the price, or because of something else.. if i were to buy goods online, i'd like the goods to be cheap(who doesnt?), credit card transfering must be convenient, goods must be delivered on time, and most importantly; i get what i'd paid for.. the thing is, how can i be sure that this is safe? how do they work(paying online)? is there any guarantee to all of these? the retailers can promised and guaranteed us safe payment via online.. but then again, how safe is safe?