Runescape - Will this give me a profit?

If you craft everything yourself; cut 2k yews, string the yews, mine 2k pure essence, craft 2k nature runes, then high alch all 2k of those, you'll get around 1.4m. It'll take you a week and a half to two weeks, though. My brother did that for a long time; he was able to buy a santa hat when they were 30m.