Bring any webpage layout into Oxygen builder for WordPress and start customising in no time. Stop wasting time trying to do it the 'right way'. Use Nimbufy with Oxygen builder. Watch demonstration videos
Here is an attempt to clear your doubts, until you see it in action yourself.
Yes. That is exactly what it does. It gets you any html layout along with complete styling, into Oxygen Builder. Where you can edit it or customise it the way you like.
The Nimbufy plugin itself is free to install. This plugin acts a client to connect to the Nimbufy service in a secure way. The service is used to convert the HtML data into oxygen format. You pay a very nominal price only for the data that you convert.
Whenever you issue a request for converting any layout to Oxygen, the size of final data in Kilo bytes that Oxygen builder receives from Nimbufy is deducted from your account.
The data generated for Oxygen is not exactly HTML/CSS syntax, but is a structure of values that lets the Oxygen re-create HTML/CSS out of. This data is a lot smaller in size than the HTML/CSS it represents. And you will be charged for the size of this data and not the size of HTML/CSS. Although, its safe to say that the size of the data directly proportional to the the size of HTML/CSS.
No, the images are never a part of the Oxygen Data. It contains only the links to the images involved, but direct images are not downloaded. So, you will never charged for the size of the linked images.
A regular web page can take anywhere between 200 Kbs to 2000 Kbs (basic to overy complicated pages), if solely built using Nimbufy. The additional benefit comes from the fact that you need to convert a block only once, and then you can save it as a reusable or in the block library in order to use it later. Please watch videos posted at the Nimbufy Facebook Page to have a better idea of how many KBs usualy such requests cost.
Yes, the system is in continuous development and is getting better by the day. However, at this stage, it does not support responsive layout. Only the Desktop version of a layout will be imported, and you will have to do manual efforts to further convert it into mobile in the Oxygen builder. And further, it would be safe to avoid importing slideshows, carousels and complex navigation menus. It may not be able to display imported icons, but there will be placeholders for the missing icons which you can easily replace with the Oxygen Icons