I don’t ever think $550 for any type of Copper cables is a good deal. OFC Copper isn’t gold ! Anyways, I recommend you to just pick up a soldering iron, do some YouTube and google videos. Practice, and start DIY. Cables isn’t rocket science.
Now, exotic materials is different, and could be very expensive, but still, you would still save a hell lot of money if you start DIY on cables, period. The main secret recipe is in the materials. Soldering isn’t any new technology that you should be paying an astrocity pricing for.
Yes, there are differences in soldering that can affect the quality. But it is negligible on cables. You would be surprised by how lousy some “upgraded cables” solder joins are. Again, if you are that enthusiastic, pick up the iron, practice, perfect your techniques, and bring the satisfaction to the acceptable level to your own. It is not rocket sciences!