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Only time I have encountered stuff like this is when Google cached a URL as it was in the middle of being redirected. For example on a big eCommerce store, it's common for URLs to redirect sometimes if the product is unavailable or out of stock, but then when they come back in stock they go back to 200 (OK). It's possible that some dev issue occurred, or that a product was temporarily experiencing normal redirect behavior - and Google happened to re-cache at that specific moment If the WayBack Machine (Google it) has a backup of the page from the same day (or very close) you might be able to see the same behavior there to verify. Another possibility is that for some reason, Google's 'Googlebot' user-agent is being redirected on product pages or just their caching bot, a defense to 'stop' Google from caching their URLs (which some might argue can result in complications, e.g: if they accidentally put up a product listing with false info and corrected it later - if the old version were still cached, a user could 'prove' that they were missold on something - so some sites take measures to mess with Google's caching) Try accessing the pages with the "Googlebot" user-agent and see what happens. Try this Chrome plugin, make sure to clear your cache and stuff before attempting to connect. It could always be a temporary Google glitch, but it's wise to explore at least a few possible avenues before reaching such a conclusion

sometimes, designers take shortcuts or are limited on where to place content on a product page. Amazon is the almighty King of ecommerce. They lead with images, then description, then reviews, then price, then features, then specs. With a video at the bottom.