Yes, on checking out those links, the first 3 postage costs are ridiculous. The 4th one is the one I ordered that I don’t want to tear apart in case I need such a cable in the future as I said, and the 5th one is top quality yes, but again, postage is more than the cable.
As for soldering them myself, to be honest I can’t really be stuffed sourcing all the components (which should all be in the same shop anyway and if not, that’s more running around) and then taking the time putting it together myself. I’d rather get it done professionally, prefab if you want to call it, rather than rely on my feeble efforts that might need troubleshooting in the future. I haven’t done any soldering for years.
It might turn out all the bits and cable, plus a new soldering iron and stuff would come near to the cost a new item anyway.
Thanks for your research and info, @Saba. It is much appreciated. It has helped me with some deciding.