Yes, the price is the point. Excel (Office) is that dirt fucking cheap, industry standard, and comes with a bunch of other shit included that can be legitimate value add for a small business.

If you're at a firm that has legitimate need for specialized accounting software, you'll have enough money to get those. But even those generally export to Excel format. Without outing myself too much, I've had comsiderable exposure to financial tech over the last decade and less than 10 specialized accounting softwares I've seen couldn't export to Excel. All of those still exported to csv, or "software agnostic excel" if we want to bend things a bit.

The power of being industry standard for going on 30 years now cannot be overstated.