Generally you can't look at an Internal site and get the best offer. Most cruise lines, in fact all that I know of, have come down on Internet travel agencies/agents and won't do business with an agency that openly advertises their discounts. It came about by traditional brick and mortar agencies/agents threatening to not steer customers to cruise lines that let Internet agencies/agents advertise their discounts. For instance, I deal with an Internet agency that gives me 10-12% cash discounts but if you look up a cruise on their site it's the same price as the cruise lines. So I send my agent an email and she comes back with a price and the discount I'll receive.