positive terminal to battery has broken,what do I have to do to replace it. on 2005 Suzuki Verona

someone told me I have to replace both positive and neg. as they are connected as one this true,if so what is
the cost of replacing it ? I also see an auto part house seems to disagree,the have a cable that they claim will replace the positive terminal (autocraft) and its only $10..
who is correct,or will either work ?

Asked by for the 2005 Suzuki Verona
you can replace just the cable tip. simple to do. parts guy can explain.