Guitar Starter KIt

Two years ago, I got  my kids a starter kit guitar.  MY daughter  tried it  a couple opf times but she siadf that she is more interested with  violin.  We haven't  enrolled her into violin lessons yet as we  don't have the money to buy her the violin.  My son on the other hand  is interested with guitar but  he wants to have a real guitar first.  I bought one at a garage sale but it needs new strings.  I was looking at the guitarcenter.com sale and the price is actually cheaper than I thought it would be so maybe, I can afford to giet him a new one.