Off-the-shelf software never fits a hundred percent. So you have that one piece built custom, and another, and another. It feels like the smart choice: exactly what you need. The real bill only arrives years later.
Where the bill adds up
Build cost is usually the smallest part of the story. The quiet costs sit in everything that comes after.
Maintenance and development
Dependence on one builder
Updates and compatibility
Documentation and knowledge transfer
Longer lead time
“The custom build cost us fifteen thousand euros. Over four years we paid almost three times that again just to keep it running.”
Director, services firm (35 employees)

When custom is the right choice
Custom isn't wrong, it's just often used in the wrong place. For the processes that truly set you apart from competitors, it can give you an edge. For anything that an off-the-shelf package handles just fine, it's rarely worth it.
The rule of thumb: choose off-the-shelf for what works the same everywhere, and custom only for what makes you unique. Unsure where that line sits? We'll think it through with you, free and independently.