Here's the guideline we use for picking deals: First, it should be for an SSD that performs well (or in select cases, performs well for its MSRP), and is a reasonable price when not on sale. The discount should also be significant for that particular model. Ex: For SSDs that almost never go on sale, a reduction of $5 to $10 is already hefty. For others, that might be closer to $20 to $30. In other words, expect to pick up high-performing drives at an all-time low (or very close to that) during Prime Day. Ignore the options that don't meet this criteria.