Stoq (Preorder & Back in Stock)
Turns a sold-out product page from a dead end into a waitlist, and lets you take preorders with partial payment.
Who it's for
Shopify stores that sell out, run seasonal drops, or launch products before stock lands.
Our take
The cheapest revenue on this list, because it recovers demand you already earned. Someone who reaches a sold-out page wanted to buy today; without a waitlist that intent is simply gone. Preorders go further and let you collect money before the stock arrives, which is the difference between funding a restock and financing it.
The honest downside
Shopify only. And preorders raise expectations: publish the ship date on the product page and email buyers the moment it slips, or the tool that recovered the sale becomes the one generating the refund requests.
What it costs
Free plan covers 10 preorders and 30 emails a month; Lite $10/month, Pro $29/month, Unlimited $69/month. Rated 5.0 from more than 3,500 reviews on the Shopify App Store.
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