In business, testing prices helps make you more profitable. The more you can test them, the better. I see people keeping their prices flat, they aren't testing what people want to pay. Monerica is always testing prices for sponsorship, they change with demand. This is done manually right now and it's hard to automate it.
The more you can test your prices, the more you can see if you can increase them. In some cases, you may charge too much and have to reset them. But just as the XMR price is constantly in flux, so too should your business or service prices.