To get rid of the error, REPLACE
<?php
if(array_key_exists($count, $price_breaks_array)) {
echo tep_draw_separator('pixel_trans.gif', '24', '15') . ' ' . tep_draw_input_field('products_price' . $count, $price_breaks_array[$count]['products_price'], 'size="10"');
echo tep_draw_separator('pixel_trans.gif', '24', '15') . TEXT_PRODUCTS_QTY;
echo tep_draw_separator('pixel_trans.gif', '24', '15') . tep_draw_input_field('products_qty' . $count, $price_breaks_array[$count]['products_qty'], 'size="10"');
echo tep_draw_separator('pixel_trans.gif', '24', '15') . tep_draw_checkbox_field('products_delete' . $count, 'y', false) . TEXT_PRODUCTS_DELETE;
} else {
echo tep_draw_separator('pixel_trans.gif', '24', '15') . ' ' . tep_draw_input_field('products_price' . $count, '', 'size="10"');
echo tep_draw_separator('pixel_trans.gif', '24', '15') . TEXT_PRODUCTS_QTY;
echo tep_draw_separator('pixel_trans.gif', '24', '15') . tep_draw_input_field('products_qty' . $count, '', 'size="10"');
}
?>
WITH
<?php
if(isset($count)) {
echo tep_draw_separator('pixel_trans.gif', '24', '15') . ' ' . tep_draw_input_field('products_price' . $count, $price_breaks_array[$count]['products_price'], 'size="10"');
echo tep_draw_separator('pixel_trans.gif', '24', '15') . TEXT_PRODUCTS_QTY;
echo tep_draw_separator('pixel_trans.gif', '24', '15') . tep_draw_input_field('products_qty' . $count, $price_breaks_array[$count]['products_qty'], 'size="10"');
echo tep_draw_separator('pixel_trans.gif', '24', '15') . tep_draw_checkbox_field('products_delete' . $count, 'y', false) . TEXT_PRODUCTS_DELETE;
} else {
echo tep_draw_separator('pixel_trans.gif', '24', '15') . ' ' . tep_draw_input_field('products_price' . $count, '', 'size="10"');
echo tep_draw_separator('pixel_trans.gif', '24', '15') . TEXT_PRODUCTS_QTY;
echo tep_draw_separator('pixel_trans.gif', '24', '15') . tep_draw_input_field('products_qty' . $count, '', 'size="10"');
}
?>
Cheers.