That’s true that they are increasing the license cost and also they have removed lifetime license as well. That means, you have to pay every month. But the current price hike should not affect to a company because it is still manageable price.
If you are using limited features and do not need large number of module, you can go for Blesta. You can refer WHMCS vs Blesta comparison for more detail.
Blesta is also good option if you are using limited modules and your require modules are available in Blesta. Also, the license cost is low (as of now).