This is the best price for All-in-One WP Migration plugin Legacy v6.77. To my knowledge all free instances of the plugin have been replaced with a modified version which can't be hacked to increase the import file size limit.
This version, and all prior releases, of All-in-One WP Migration at the wordpress.org repository have been replaced using the original file names.
I downloaded this plugin directly from wordpress.org prior to the changes being made and it has not been modified in any way. It's the real original which includes the option to upload directly within the "all in one" plugin.
The later versions require an extension plugin which is not hosted in the wordpress.org repository which is therefore a security risk. Source github.com. Sadly, the link at github is to the modified version of the plugin at wordpress.org which is no longer the original.
Before we go any further, I want to point out that it is legal to access and modify the source code of this version of the plugin because it’s licensed as open source.
Without the premium Unlimited Extension, currently priced at $69, the import limit is set at 512MB.
This legacy version of the plugin can be modified by changing a single line of code. You don't need to be a geek to follow these simple instructions.
Legacy versions of plugins have not been tested on the latest version of WordPress and may not be secure or stable.