Both rampart camps, at the Stirk island and Solstice have pretty much the same things to offer, except the Solstice camp also gives the defend camps quest. I have an alt account with no ESO+ so I need to rely on merchants for selling stuff, repairs and getting style stones. I noticed the Stirk island camp has no merchant available. Same goes for the camp in Solstice.
Why are there no merchants at those camps? Seems like an oversight, especially when one of the quest types is a crafting quest where style materials are needed.