CD Baby just started out with some links to purchase albums IIRC. Derek then manually filled orders and sent items out.
As a consultant I see a lot of people put way too much effort into developing bespoke software to automate or "improve" workflows that don't even really exist in their business yet, only to find out that the real bottlenecks exist in places they never even knew (and that they've wasted a bunch of money building something they'll never really use).
It's like a "real life" analogue of the adage "premature optimisation is the devil".