Here's a run-down of product discount benefits for permanent employees (full-time and part-time) as of late 2005:
an on-going 10% discount on anything in the store
a once-per-year 25% discount on a complete system
three discounts for friends and family per year of 15% off a complete system
deals on product models Apple is discontinuing prior to new product introductions, and overstocked items before the end of each quarter
occasional employee discounts or rebates on third-part products
a quarterly bonus if the store achieves its sales quota, $500 for part-time and $1,000 for full-time employees