What state are the cabinets in?
Are you happy with the current layout?
Do you need to change the appliances?
Do you want to re-do the flooring?
Are you going to replace the splashbacks?
The further you go with a refurb the more you might as well change the cabinets if the rest of the kitchen isn't in very good condition. Cost it up with DIY Kitchens & see how much more they would cost although obviously the labour would be more.