I'm all for them making money. I just think it's a scumbag move to charge full price, or close enough, for a remaster.
You say it's not different than normal ports, but it is. They're releasing year old games, not brand new ones, at the same price you might pay for brand new material. How much work did they do on them? Not much. They're charging 125% of the price for a game that took 10% of the effort.
How often before have we gotten such terribly priced HD remasters? Yeah with the price drop it's the same price as Wind Waker HD, but Wind Waker was out of production, years old, and received a massive upgrade so it was a great value. Hell most HD Remaster games now come as Collections and are much cheaper than a standard game. FFX/X-2, DMC HD Collection, and several MGS collections are great examples of HD done right and packed with value, but today's re-releases? Not so much.