Commerce Quarterly The economics of selling online
Commerce Quarterly

Costs · Margins · The business of ecommerce

Indexes

We Logged Every Shopify Theme Listing for 12 Days Straight. Nine in Ten Moved

The Theme Store ranking looks like one stable list but the daily count shows nine in ten listings changed position over twelve days, and the usual single stability number hides that some categories barely move while others reshuffle almost completely.

Oct 30, 2026

Costs, margins & indexes

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Costs

Gain Theme in the Editor: What Its Settings Actually Change

This article settles which editor settings in UTD's Gain theme are real checkboxes with defaults and which features are built into the code with no switch at all, because a demo store only ever shows one configuration, never the full range.

Costs

FAQ Accordion in Gain: The Setting, the Default and What It Changes

A reader searching for a Shopify FAQ section theme usually wants to know whether the accordion is a real section or a layout trick, and across the six themes UTD publishes in the Shopify Theme Store the answer is more uniform than the search results suggest.

12 Across 12 days, 984 of 1080 Theme Store listings changed position, which is 91.1 percent of the whole catalog.
4.3.1 Gain 4.3.1 ships the Cart Upsell feature in snippets/cart-upsell.liquid with no editor toggle, while Boutique 2.3.4 exposes the same feature as a text setting called upsell_heading with 1 setting total around it.
12 Over 12 days, from 2026-08-31 to 2026-09-12, 984 of 1080 Theme Store listings changed rank, which is 91.1% of the whole catalog.

Starting up & briefings

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Starting Up

Shopify Theme Impression: For Work That Needs More Than a Product Grid

A handmade object loses most of its argument in a row of square thumbnails. Impression is built around sections the scroll drives — four of its eleven exclusive sections move with the page — and it carries 141 hand-tuned easing curves, more than any other theme we publish.

A small cardboard product box on a brass balance scale weighed against coins and a paper ledger
Guide

Unit Economics 101 for a Store, With a Worked Model

Forget the spreadsheet templates with 40 tabs. Unit economics is one question: after one order pays its own bills, what is left? Here is the math on a single $60 order, every line explained.