I have been following Maxi Blocks for a while now. I saw their product and I highly recommend it for the following reasons:

The plugin is 100% free with all the functionality that comes with it. YES, FREE. There are no pro features. Everything is included.
More than 13k free icons which could be colored to meet our needs.
Each week they are adding new patterns, pages, and icons.
There are free patterns and pages available.
The cards (style guides) are great for starting your project with consistency. Everything that you import into the pages is styled based on the cards so it reduces changing a lot of styles manually.
They are actively working on the pages, patterns, icons, and the plugin itself.

The only pro areas are pages and patterns meant to reduce the design and development type as they are done for us. You could create the same patterns and pages from scratch with the free version but I recommend getting an account to speed up your development time.

I am waiting for their theme because once it is out, I will be moving to Maxi Blocks 100% to our design and development needs related to WordPress.

For one deal of Maxi Blocks, you cannot even get a year of any other page builders. Take a look at their videos and you will be surprised by the details and work put into this product. Don’t wait until it is too late. I am a happy customer and this is a must-buy.