diff --git a/tienda_ilusion/don_confiao/models.py b/tienda_ilusion/don_confiao/models.py
index eb7d0a9..1c50852 100644
--- a/tienda_ilusion/don_confiao/models.py
+++ b/tienda_ilusion/don_confiao/models.py
@@ -43,6 +43,7 @@ class Product(models.Model):
         all_products = cls.objects.all()
         for product in all_products:
             rproduct = {
+                "id": product.id,
                 "name": product.name,
                 "price_list": product.price,
                 "uom": product.measuring_unit,
diff --git a/tienda_ilusion/don_confiao/static/js/buy_general.js b/tienda_ilusion/don_confiao/static/js/buy_general.js
new file mode 100644
index 0000000..b910945
--- /dev/null
+++ b/tienda_ilusion/don_confiao/static/js/buy_general.js
@@ -0,0 +1,25 @@
+setPriceListeners();
+
+function setPriceListeners() {
+    document.querySelectorAll('select[id^="id_saleline_set-"][id$="-product"]').forEach((input) => {
+        console.log('setPriceListenersForeach');
+        console.log(input.id);
+        input.addEventListener('change', (e) => setLinePrice(e));
+    });
+}
+
+function setLinePrice(e) {
+    console.log('setLinePrice');
+    let input = e.target;
+    const idLine = input.id.split('-')[1];
+    const productId = input.value;
+    const priceInput = document.getElementById(`id_saleline_set-${idLine}-unit_price`);
+
+    const product = listProducts.find((product) => product.id == productId);
+    if (product) {
+        priceInput.value = product.price_list;
+    } else {
+        priceInput.value = '';
+    }
+}
+
diff --git a/tienda_ilusion/don_confiao/templates/don_confiao/purchase.html b/tienda_ilusion/don_confiao/templates/don_confiao/purchase.html
index 0a23b0e..8fa028d 100644
--- a/tienda_ilusion/don_confiao/templates/don_confiao/purchase.html
+++ b/tienda_ilusion/don_confiao/templates/don_confiao/purchase.html
@@ -32,6 +32,7 @@
 </div>
 
 <script src="https://cdn.tailwindcss.com/"></script>
+<script src="{% static 'js/buy_general.js' %}"></script>
 <script src="{% static 'js/add_line.js' %}"></script>
 <script src="{% static 'js/sale_summary.js' %}"></script>
 <script src="{% static 'js/calculate_subtotal_line.js' %}"></script>