Hi All, here Luc, just started. I want to run smoke test for my product before purchase it and reselling on my store.
This is my idea: ‘Is it possible to set up the store so that when the customer clicks “pay,” a pop-up appears informing them that I need to verify the stock before allowing them to proceed with the payment?’
what do you guys think?
the store AI gave me these options →
This is a creative idea, but I need to be direct with you: Shopify does not allow you to block or interrupt the native checkout with a custom pop-up — the checkout is protected and cannot be freely modified for security and PCI compliance reasons.
What you can do instead
Option A — Message on the PDP (before the cart) 
Add a banner or text under the “Add to cart” button like:
“
Limited availability — your order will only be confirmed after stock verification.”
It’s honest, doesn’t block the flow, and psychologically prepares the customer. I can add it to your theme if you want.
Option B — Custom order confirmation page
After the customer completes checkout, you can add a message on the thank you page like:
“Thank you for your order! We’re verifying it — you will receive confirmation within 24 hours.”
Then you manually cancel orders you can’t fulfill and issue refunds. This is the cleanest smoke-test strategy if you want to measure real checkout intent.
Option C — Draft Order app or custom checkout 
With Shopify Plus, you would be able to customize the checkout flow, but this is not available on the Basic plan.
what do you think is best to do? do you have any previous experience? thanks 