Think of the SaaS products you pay for. Do you know if they're well built? No. You don't get to see the code. You're still a customer.
"Well built" affects your on-going costs. Maintaining a badly built app is tedious and expensive. That's the reason to build well. It has no impact on the customer (even bugs are tolerated so long as data isn't lost). No one cares about the quality of the code when they buy an app.
Think of the SaaS products you pay for. Do you know if they're well built? No. You don't get to see the code. You're still a customer.
"Well built" affects your on-going costs. Maintaining a badly built app is tedious and expensive. That's the reason to build well. It has no impact on the customer (even bugs are tolerated so long as data isn't lost). No one cares about the quality of the code when they buy an app.