This guide is built around one honest rule: no money spent on inventory,no paid store subscription required to start, and no ad budget needed toget your first sales. That is a real and common way to begin. It is not thesame as saying the business costs nothing at all.R E A L I T Y C H E C KYou will still need a device with internet access, an email address, and a payment methodto receive money (like PayPal or a bank-linked app). Free trials of store platforms are time-limited. What you are skipping is the biggest normal cost of starting a product business:buying stock before you have a single customer.Who this is genuinely a good fit forYou can commit a few focused hours a week to posting content and answering messages, notjust setting up a store once and waiting.You are willing to start on social media or a marketplace instead of a polished brandedwebsite, at least until you have proof the product sells.You are comfortable telling customers the truth about shipping times, since many free-tiersuppliers ship from overseas.Who should hold offAnyone expecting income within days โ validating a product and building enough trust toconvert strangers takes weeks of consistent effort.Anyone unwilling to handle refunds and delayed-shipping complaints personally, since at zerobudget, you are the entire support team.