The same as for any other skill. About 4 million. You can check how much you are missing by setting a certain level as the target in the list of skills, then moving your mouse over the skill.
There is no magic planks in runescape. Only plank, oak plank, teak plank and mahogany plank.
250xp per log
Roughly 1.3million
The market price for one Magic log is approximately 1,360gp - 1,504gp.
depends on inventory and training
In Runescape, You receive 65 Magic XP for every High Alchemy spell that is cast.
Magic Logs give 303 xp per log when you burn them.
It certainly does. Strength if you are a mage affects the strength of your hit. Not as much as a high magic lvl, but still alot.
Falador teleport gives you 48 Magic experience.
The magic tree seed costs around 300,000 coins. Search the item on the Grand Exchange to get the current price.
Same as for level 99 in any other skill. About 13 millions.
Some options include magic combat (which is now much cheaper than it used to be), doing high alchemy, and training in the Mage Training Arena.