Dry ridge system query

[cluelesscaterpillar]

I've had a new roof fitted and was told I'd be supplied with a new dry ridge system. Should this have included new ridges? The roofer has used most of my existing ridges. New ones have been put in where the old ones have cracked when stripping the roof. Should I query this or do most roofers use old ridges?  Also, does the roof look up to standard?

 

Thanks