Having to limit my shopping to just the categories you support is a deal-breaker. If I can't buy it on Amazon, I probably don't need it. You're basically just a

Having to limit my shopping to just the categories you support is a deal-breaker. If I can't buy it on Amazon, I probably don't need it. You're basically just another online store with slightly better prices. I also don't buy big-ticket items lightly. If saving hundreds is a possibility, then there are also way way more considerations, and I'll probably end up targeting a particular model of a particular brand, then I'll search for the best price. Your solution may work for that, but so does Google and just going to each retailer's website manually. With big ticket purchases, convenience isn't really a factor in my purchase decision. To me your product is a solution in search of a problem. I hope I'm wrong.