It really is the easiest thing, to terminate cables. You seem to have convinced yourself that you can't do it..
If you can sculpt, or stretch a canvas, you can certainly do this yourself. You don't even have to solder, crimp connections can also be very good. You would need to buy a good pair of crimping pliers, of course. Soldering is very easy as well and solder and a soldering iron can be had cheaply.
For approximately half of the mental energy you seem to have spent worrying about this, you could fix this yourself.
Do it!