Got a 20ft Whirlwind still going from the early/mid 90s sometime. First quality lead I bought after having a fewer cheaper ones and then understanding why you pay more for a good lead.
That said, some time back then my favourite music shop ran a bargain bin full of 10ft leads with moulded plugs that had come with some of the cheaper starter guitars. £1 ]per lead. I bought 10 of them and kept them in my gig bag for years as emergency backups in case any issues at a gig. Still got a couple in use now for home practicing.