How much you'll see just from related products varies significantly based on the type of products you've got and how much potential there is for selling additional products based on related products. i.e. if you've got a bunch of disjoint products, you're probably not going to see huge lift, but if you've got products that tend to compliment each other (and, of course the data we can infer that from), you'll see a decent bump.
That said, we'd like to have personalization, from the line in our FAQ:
We've been talking with the Shopify team about making personalized, e.g. Welcome back Bob, here are some things we think you'll like, possible. The Directed Edge recommendations engine supports that type of recommendations, though currently we don't have the ability to get the necessary data from Shopify stores.
That said, we'd like to have personalization, from the line in our FAQ:
We've been talking with the Shopify team about making personalized, e.g. Welcome back Bob, here are some things we think you'll like, possible. The Directed Edge recommendations engine supports that type of recommendations, though currently we don't have the ability to get the necessary data from Shopify stores.
http://shopify.directededge.com/home/faq#personalized