Other than the cost of materials, it should be free. It’s a fan made restoration and as such should never be sold or bought for profit.
What you’ll be looking at is a Blu-Ray burner, which can be had for around $100 for an external USB one, or around $50-60 for an internal one that goes in your PC case’s disc drive bay.
Then you’ll need blank Blu-Ray media to write the files to a disc. I recommend Verbatim brand, price depends on if you go for a large spindle of discs, if you go for printable (plain white surface) discs or not, and if you go single layer (25GB) or dual layer (50GB).
Finally, you’re going to need the files themselves! If you’re burning to disc, I recommend NJVC’s set, which has both single- and dual-layer options, complete with menus and such. There’s a thread with details about it in this very forum.
For burning to the disc, the free software imgburn will be all you’ll need to get the downloaded file burned to your blank disc.
And that’s it!
Now, alternatively, you can just download the MKV video file versions, put them on a flash drive, and plug the flash drive into your Blu-Ray player (or possibly even just your TV), which should have no trouble playing the standalone files.
The last option is to get the ~8GB AVCHD versions, which can be burned to a DVD+R DL (dual layer DVD) with a standard DVD burner. This still results in an HD disc that can only be played on BR players, but it isn’t universally compatible and the quality is ever so slightly reduced compared to the full size MKV releases.
Hope that helps! Feel free to ask any questions either here or in a private message if you’re confused or have any issues with any part of the process.