Before buying Garmin Edge 530 I wasn´t too sure of doing it so, but when I found out that it had a Climb pro and elevation profile pages I didn't think it twice and I bought it.
Later I found out that those pages are pretty much useless unless you can set the scale. It looks like something easy to fix by Garmin and I have seen a lot of people complaining about it so I tend to think that they just dont want to do it. Maybe they are waiting for another brand to do it first.