You're obviously a complete retail noob. You're trying to be a clerk, not a sales associate. Your job is as follows:
To seperate the customer from as much of their money as possible,
legally
morally
and ethically
In that order of descending importance. If they ask about the Audigy 2 ZS, sure, it's a good sound card, but you need to let them know every step of the way how much they're losing out by not going with the platinum. Oh man, that's quite a drop in quality.
Etc.
Understand this people: Salespeople's job description amounts to "screw the customer". Buyer beware.
