I spent 2.5 years believing reviews = Buy Box. I was dead wrong.
For the first two and a half years of my Amazon Canada business, I was obsessed with reviews. Every product I looked at, the first thing I checked was "how many reviews does this listing have?" If the top seller had 10,00 reviews, I would skip it. No chance I could compete with that, right? I built my entire sourcing strategy around this. I would only go after listings where the review counts were low or where no single seller had a massive review advantage. It made sense in my head. More reviews = more trust = you get the Buy Box. Simple. Then I met a guy at a meetup who had started selling on Amazon about six months AFTER me. He was doing $300K a month. I was doing maybe $30K. Same marketplace, same model, same everything. So I asked him what he was doing differently. He looked at me and said "Why do you think reviews matter for the Buy Box?" I started explaining my logic and he just shook his head. He said "Bro, the Buy Box algorithm doesn't care about your reviews. It cares about two things. Inventory distribution and delivery speed." That conversation changed everything for me. Here's what actually matters for winning the Buy Box on Amazon Canada: 1. FBA vs FBM. If you're FBA, you already have a massive advantage. Amazon trusts their own fulfillment. If the other seller is FBM and you're FBA, you're winning that Buy Box almost every time, regardless of reviews. 2. Inventory availability. Amazon wants the Buy Box seller to actually HAVE stock. If you're consistently in stock and competitors keep running out, Amazon learns to favor you. They don't want to send customers to someone who might be out of stock tomorrow. 3. Price competitiveness. Not always the lowest price. But competitive. Amazon factors in the total landed cost to the customer. In Canada, this includes shipping and duties if applicable. 4. Seller metrics. Your ODR (Order Defect Rate), late shipment rate, cancellation rate. These matter way more than reviews for Buy Box eligibility. 5. Delivery speed. This is the big one most people miss. Amazon's algorithm heavily weights how fast you can get the product to the customer. This is why FBA sellers crush it. Same day, next day, two day shipping. That's what Amazon wants.