This chart shows the actual pricing history for three items. A 5-column table titled historical pricing for small-scale items has 3 rows. The first column is labeled item with entries game system, smart phone, D V D. The second column is labeled Retail price with entries 249, 599, 24 dollars. The third column is labeled Retail sale price with entries blank, blank, 16 dollars. The fourth column is labeled Price 6 months later with entries 229, 399, 19 dollars. The fifth column is labeled auction price with entries 450 dollars, blank, blank. For which product(s) would it be most beneficial to wait before buying? game system smartphone DVD and smartphone smartphone and game system