Deals and discounts don’t stay static during the Black Friday shopping weekend. Prices change, and offers vanish as products go out of stock. If you’re looking to get a deal on something that you predict will be in high demand, like newly-released electronics or trendy goods, it’s smarter to snatch them up as soon as the Black Friday deals begin to make sure you get one. For less urgent needs, it’s not a bad idea to wait until Cyber Monday, as many retailers offer additional price cuts to move the last of their inventory. Smart shoppers set aside a little time each day to get the best deals

Different product categories also seem to be better on one day or the other. TVs typically have better deals on Friday, while laptops are discounted deeper on Monday. It’s uncertain exactly why this is the case, but historical data bears it out. Now, this isn’t a hard and fast rule, so if you see an item you want at a good price, grab it when you can and don’t worry about what the future might bring.