The English Renaissance pattern by Royal Doulton was first introduced in 1963 and discontinued in 1996. It is also called pattern number H4972.
The values are as follows for the condition you described;
$480.00...12 dinner plates
$360.00...12 cups and saucers
$360.00...12 salad plates
$180.00...12 bread plates
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A dealer will not pay retail value (1300.00) because they need to have room to make a profit. A dealer will likely offer you less than half of the retail value for the set ($400 to $600).
If you were selling the set on Ebay yourself, you could ask the retail price or if you were putting the set on consignment in a shop.