Z:gnu-www-ja-free-world-notes--be5a19-More expensive software often/en

More expensive software often includes after-the-sale service, which should be considered a marketing/sales cost, since it props up an extravagant price structure. Service should be considered a separate cost, independent of development. Free software is always delivered with no service, and customers who need service can obtain help independently, since the inner workings of the software are public knowledge.