[dahwolf]

I think the issue here is that whilst your site may have utility, it has zero original/unique content. To Google, this looks like a link farm.

You might argue that your discount price is "unique content" but good luck getting Google to understand that. Plus, I imagine those shoe names are competitive queries, which means you're up against paid ads. Further, I assume your discounts are time-sensitive, which means unreliable indexing is not a good solution for up-to-date pricing.