In Pokemon X and Y you are not allowed to sell mega stones unfortunately. They are considered a special item.
5-6 gb
Eevee it can pretty much use all of them.
Approx 7 to16$
you cant sell pokemons noob.
about 20 dollars
1,000,000 dollars
around £15
For all The 3rd Gen. Pokemon games, about $29.00 USD.
A mega is 2,000 grams
As of January 2, 2010 on amazon.com, new copies are selling for around $120. Used copies of various quality are selling from $17 to $80.
Mega is a prefix that means a million.
0.3 Mega