We're not in production yet, so we're still testing with some friendly merchants, but the largest dataset we've encountered is 1.3M rows (approx 900MiB of CSV). That's for a mobile phone retailer, and it's essentially the cross product of all the variables in their deals. To answer your other question, for that reason a longer-term goal is to introduce a format for aggregating multiple product options. That requires buy-in, though.

> What platforms do you integrate with? This wasn’t obvious to me after quickly scanning the site

After talking to some of our potential customers, most of them seem to be lacking in very technical staff. One of the larger ones has a brand new GBP 20M web site that they have no internal control over. For that reason, we've developed a couple of solutions that can be implemented in the web layer instead of the inventory layer. We'd be happy to work with any merchant who wants us to integrate with their e-commerce backend, though; in fact, it makes things a lot easier for us.

> Do you let me dedupe, aggregate, or create new data attributes in your platform?

We don't do deduping yet (no one has asked for it so far), but we allow you to create new data attributes in your product schema. The primary motivation for this is to generate product IDs for feeds that don't have an explicit ID column, but do have one in, say, the product URL. We'll be extending it as use cases come along, for things like extracting attributes from product titles or descriptions, and fixing up data to meet the requirements of particular ad networks.