I believe this is a big must, especially whenever you’re buying electronics and gadgets — whether online or through physical stores. In our time and age, electronic consumer items have different specs and features to set them apart from their competitors. The likes of cellphones and laptops may have different models per brand, but these models may sometimes come in different variants offering small spec differences: processor, memory, screen type etc.
The key is to always research on the details and specifics of the item you want to buy, to make sure that you’ll end up with no regrets on getting the item. Remember, haste makes waste.