Deface::Override.new(virtual_path: 'spree/admin/products/_form',
                     name: 'add_sale_price_to_product_edit',
                     insert_after: "erb[loud]:contains('text_field :price')",
                     text: "
                     <%= f.field_container :sale_price %>
                     <%= f.label :sale_price, raw(Spree.t(:sale_price) + content_tag(:span, ' *')) %>
                     <%= f.text_field :sale_price, value: number_to_currency(@product.sale_price, unit: '') %>
                     <%= f.error_message_on :sale_price %>
                     <% end %>
                     ")

Deface::Override.new(:virtual_path => 'spree/admin/products/_form',
  :name => 'add_sale_price_to_product_edit',
  :insert_after => "erb[loud]:contains('text_field :price')",
  :text => "
    <%= f.field_container :sale_price do %>
      <%= f.label :sale_price, raw(Spree.t(:sale_price) + content_tag(:span, ' *')) %>
      <%= f.text_field :sale_price, :value =>
        number_to_currency(@product.sale_price, :unit => '') %>
      <%= f.error_message_on :sale_price %>
    <% end %>
  ")

Fix admin sale price input
Fix admin sale price input
