How can add my burger.price to my Item.price to create the Total?

I am looking to have my burger.price (if there is a custom burger in the cart) to be added to the total with the item.price. Any help would be great! I am new to using vue and vuex.

<template>
<div>
  <b-button v-b-modal.modal-1>Cart({{numInCart}})</b-button>
  <b-modal id="modal-1" size="xl" title="Shopping Cart" ok-title="Checkout" cancel-title="Continue Shopping">
    <table class="table">
      <tbody>
      <!-- replace in cart with custom burger -->
      <tr v-for="(item, index) in cart" :key="item.id">
        <td>{{ item.name }}</td>
        <td></td>
        <td></td>
        <td></td>
        <td></td>
        <td>{{ item.price | dollars }}</td>
        <td>
          <button class="btn btn-sm btn-danger" @click="removeFromCart(index)">&times;</button>
        </td>
      </tr>
        <tr>
        <th>Name</th>
        <th>Bun Type</th>
        <th>Cooked Style</th>
        <th>Cheese Type</th>
        <th>Toppings</th>
      </tr>
      <tr v-for="(burger) in customBurger" :key="burger">
        <td>{{burger.name = "Custom Burger"}}</td>
        <td>{{burger.bun}}</td>
        <td>{{burger.cookedStyle}}</td>
        <td>{{burger.cheese}}</td>
        <td>{{burger.toppings}}</td>
        <td>{{burger.price | dollars }}</td>
        <td>
          <button class="btn btn-sm btn-danger" @click="removeCustomBurger(customBurger)">&times;</button>
        </td>
      </tr>
      <tr>
        <th></th>
        <th>{{ total | dollars }}</th>
        <th></th>
      </tr>
      </tbody>
    </table>
  </b-modal>
</div>
</template>

<script>
import { dollars } from '../models/filters'

export default {
  name: 'ShoppingCart',
  computed: {
    customBurger() {
      return this.$store.getters.customBurger;
    },
    inCart() { return this.$store.getters.inCart; },
    numInCart() { return this.inCart.length; },
    cart() {
      return this.$store.getters.inCart.map((cartItem) => {
        return this.$store.getters.forSale.find((forSaleItem) => {
          return cartItem === forSaleItem.invId;
        });
      });
    },
    total() {
      return this.cart.reduce((acc, cur) => acc + cur.price, 0);
    },
  },
  filters: {
    dollars,
  },
  methods: {
    removeFromCart(index) { this.$store.dispatch('removeFromCart', index); },
    removeCustomBurger(){this.$store.dispatch('removeCustomBurger');},
  },
};
</script>