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diff --git a/addons/event_sale/models/event_ticket.py b/addons/event_sale/models/event_ticket.py
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+++ b/addons/event_sale/models/event_ticket.py
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+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+import logging
+
+from odoo import api, fields, models
+
+_logger = logging.getLogger(__name__)
+
+
+class EventTemplateTicket(models.Model):
+    _inherit = 'event.type.ticket'
+
+    def _default_product_id(self):
+        return self.env.ref('event_sale.product_product_event', raise_if_not_found=False)
+
+    description = fields.Text(compute='_compute_description', readonly=False, store=True)
+    # product
+    product_id = fields.Many2one(
+        'product.product', string='Product', required=True,
+        domain=[("event_ok", "=", True)], default=_default_product_id)
+    price = fields.Float(
+        string='Price', compute='_compute_price',
+        digits='Product Price', readonly=False, store=True)
+    price_reduce = fields.Float(
+        string="Price Reduce", compute="_compute_price_reduce",
+        compute_sudo=True, digits='Product Price')
+
+    @api.depends('product_id')
+    def _compute_price(self):
+        for ticket in self:
+            if ticket.product_id and ticket.product_id.lst_price:
+                ticket.price = ticket.product_id.lst_price or 0
+            elif not ticket.price:
+                ticket.price = 0
+
+    @api.depends('product_id')
+    def _compute_description(self):
+        for ticket in self:
+            if ticket.product_id and ticket.product_id.description_sale:
+                ticket.description = ticket.product_id.description_sale
+            # initialize, i.e for embedded tree views
+            if not ticket.description:
+                ticket.description = False
+
+    @api.depends('product_id', 'price')
+    def _compute_price_reduce(self):
+        for ticket in self:
+            product = ticket.product_id
+            discount = (product.lst_price - product.price) / product.lst_price if product.lst_price else 0.0
+            ticket.price_reduce = (1.0 - discount) * ticket.price
+
+    def _init_column(self, column_name):
+        if column_name != "product_id":
+            return super(EventTemplateTicket, self)._init_column(column_name)
+
+        # fetch void columns
+        self.env.cr.execute("SELECT id FROM %s WHERE product_id IS NULL" % self._table)
+        ticket_type_ids = self.env.cr.fetchall()
+        if not ticket_type_ids:
+            return
+
+        # update existing columns
+        _logger.debug("Table '%s': setting default value of new column %s to unique values for each row",
+                      self._table, column_name)
+        default_event_product = self.env.ref('event_sale.product_product_event', raise_if_not_found=False)
+        if default_event_product:
+            product_id = default_event_product.id
+        else:
+            product_id = self.env['product.product'].create({
+                'name': 'Generic Registration Product',
+                'list_price': 0,
+                'standard_price': 0,
+                'type': 'service',
+            }).id
+            self.env['ir.model.data'].create({
+                'name': 'product_product_event',
+                'module': 'event_sale',
+                'model': 'product.product',
+                'res_id': product_id,
+            })
+        self.env.cr._obj.execute(
+            f'UPDATE {self._table} SET product_id = %s WHERE id IN %s;',
+            (product_id, tuple(ticket_type_ids))
+        )
+
+    @api.model
+    def _get_event_ticket_fields_whitelist(self):
+        """ Add sale specific fields to copy from template to ticket """
+        return super(EventTemplateTicket, self)._get_event_ticket_fields_whitelist() + ['product_id', 'price']
+
+
+class EventTicket(models.Model):
+    _inherit = 'event.event.ticket'
+    _order = "event_id, price"
+
+    # product
+    price_reduce_taxinc = fields.Float(
+        string='Price Reduce Tax inc', compute='_compute_price_reduce_taxinc',
+        compute_sudo=True)
+
+    def _compute_price_reduce_taxinc(self):
+        for event in self:
+            # sudo necessary here since the field is most probably accessed through the website
+            tax_ids = event.product_id.taxes_id.filtered(lambda r: r.company_id == event.event_id.company_id)
+            taxes = tax_ids.compute_all(event.price_reduce, event.event_id.company_id.currency_id, 1.0, product=event.product_id)
+            event.price_reduce_taxinc = taxes['total_included']
+
+    @api.depends('product_id.active')
+    def _compute_sale_available(self):
+        inactive_product_tickets = self.filtered(lambda ticket: not ticket.product_id.active)
+        for ticket in inactive_product_tickets:
+            ticket.sale_available = False
+        super(EventTicket, self - inactive_product_tickets)._compute_sale_available()
+
+    def _get_ticket_multiline_description(self):
+        """ If people set a description on their product it has more priority
+        than the ticket name itself for the SO description. """
+        self.ensure_one()
+        if self.product_id.description_sale:
+            return '%s\n%s' % (self.product_id.description_sale, self.event_id.display_name)
+        return super(EventTicket, self)._get_ticket_multiline_description()