Starting a Shopify store looks deceptively simple. Pick a theme, add some products, hit publish. And technically, that’s true — you can have a live store running in an afternoon. Whether it makes you any money is a different question entirely, and that usually comes down to a handful of things people don’t think about until it’s too late.
1. Your monthly plan is a fixed cost, whether you sell anything or not.
Shopify charges you every month regardless of sales. If you’re doing $2,000 a month in revenue, a $39 plan barely registers. If you’re doing $150 a month while you’re testing an idea, that same $39 is a real chunk of your margin. Know your break-even before you commit to a plan tier. [Shopify Profit Calculator]
2. Payment processing fees are unavoidable — plan for them.
Whichever gateway you use, you’re paying somewhere around 2.9% plus a small flat fee per transaction. It sounds small on paper, but on a high volume of low-priced items, it quietly becomes one of your biggest recurring costs. Factor it into your pricing from day one instead of discovering it in your first payout report.
3. Shipping and packaging are profit killers if you don’t price for them.
New sellers often price based on product cost alone, then get blindsided when packaging materials and actual shipping rates come out of what they thought was their margin. Weigh a sample package before you finalize pricing — guessing is how margins quietly disappear.
4. Ad spend needs to be judged per sale, not per campaign.
It’s easy to look at total ad spend and total revenue and feel like things are working. But the number that actually matters is your cost to acquire one customer, compared to what that one sale actually nets you after every other cost. A “successful” campaign that costs you $18 to earn $15 in profit per sale isn’t successful — it’s a slow leak.
5. Your real profit margin is smaller than your gross margin — always check both.
Gross margin (selling price minus product cost) looks great on a spreadsheet. Net margin — after shipping, packaging, processing fees, and your share of monthly overhead — tells you the truth. Before you commit to a pricing strategy or a big inventory order, run your numbers through both lenses. [Shopify Profit Calculator]
None of these things should scare you off starting a store. They’re not reasons not to sell — they’re just the difference between guessing at your margins and actually knowing them. The sellers who last past the first six months are usually the ones who did this math early, not the ones who got lucky with pricing.
