Try to make a new table containing product name ad prices (1 price - 1 record).
And make a relationship to return correct price for each product name.
But - in some circumstances you would like to show 2,3 prices for the same product - regular, discount. sale e.t.c. Then you need to make a portal to show all 1-3 prices.
Another variant as I can understand from the first part of your message - show products with the same price. Use Search.