Here is what I wrote to them directly:
I ordered a book set from your site recently. It was Prince Valiant by Hal Foster. Since then, any time I have tried to log into your website, my screen is inundated with books you seem to think I would be interested in and they all have book covers with female nudity, or titles that are sexually suggestive. I will therefore no longer be patronizing your company. I don't need to see, neither do I have the minutest interest in seeing, dirty books you have for sale. I am at a loss to know why on earth your sales algorithms connect a Sunday newspaper comic strip with filth such as you are now attempting to shove in my face, but I'm ending it right here, right now. My business relationship with your company is over. What a disgrace.