A good finds workflow should help you wait when waiting is smarter. If a product is not urgent, track the current price, your target price, and the date you last checked it.
For manual tracking, add columns for current price, target price, stock status, and next check date. For a simple alert system, use calendar reminders or spreadsheet color rules to highlight items that need another look.
Restocks and discounts are useful only when the product already passed your quality filter. Do not let an alert turn a weak product into an impulse buy. Use alerts to time better purchases, not to create new ones.