Update Often

As with any store, keeping the available selection of products fresh is key to keeping existing customers coming back. And as you may or may not know, selling to an existing customer is far more cost effective than getting a new customer! If an existing customer comes back to your store a few times and finds that it hasn't been updated in awhile or that there's nothing new to browse through, the time between visits will likely get longer. Keep them coming back as often and as quickly as possible by routinely uploading and promoting new designs and product selections so your store looks active and exciting.

(MLA 8th Edition)