<aura:component implements="flexipage:availableForRecordHome,force:hasRecordId" >
     <aura:attribute name="recordId" type="String" />
     <div class=" slds-card" style="padding:10px">
         <br/>
         <lightning:button variant="brand" label="Get Price" onclick="{!c.callpriceComp}"/>
     </div>
</aura:component>

({
     callpriceComp :function(component,event,helper){
         var evt = $A.get("e.force:navigateToComponent");
         var AccountId = component.get("v.recordId");
         evt.setParams({
             componentDef: "c:fetchPriceComponent" ,
             componentAttributes: {
                 storeId:AccountId
             }
         });
         evt.fire();
}})

<aura:component implements="force:lightningQuickAction,flexipage:availableForRecordHome" >
     <aura:attribute name="storeId" type="String" />
     <p>{!v.storeId}</p>
</aura:component>