https://www.metaseq.net/en/

There is free version of Metasequoia 4 but it is more limited (works without license), and it is also possible to get 30 day trial license to test all the features.


License for the EX version is easily worth that 150 USD. I bought my EX license in 2015 and all the updates have been free, so lots of software for that small amount of money.