Try Before You Buy
Just download it, drop it in your Applications folder, and start using it. The only restriction to the unlicensed copy of MoneyWell is a 200 transaction limit.
MoneyWell 2.3.10 (1906) - Download Now
Requires Mac OS X 10.7.5 Lion or newer; Compatible with El Capitan. View the MoneyWell Release Notes.
Once you decide you like MoneyWell, just click Purchase, follow the instructions, and your trial copy becomes the full-featured application.