There is one type of Rainbow Dark Dragon that was released in Phantom Darkness as a Secret Rare (PTDN-EN003). It is worth approximately 18-20 dollars.
depends on how you put together your deck or who your opponent is. if you have dark types in your deck,graveyard,and field, then i suggest rainbow dark dragon but you will not gain as much attack as rainbow dragon.although rainbow dragon gives you a lot of attack, there is not as much cards available to gain the attack and..... its complicated so ill just get to the point, they are the same if you have a regular deck that is not focused on certain monsters so like i said, depends on how you put your deck together.
you can get it for as cheap as $8.00 if you find the right deal
a lot
The card named 'Exodia the Dark Master' is a counterfeit card, and not worth anything.
The prices for this card vary per store. A good standard price for the Dragon Master Knight card is about $6.99 to $7.95.
About ten dollars
A blue eyes shining dragon will cost around $5. The blue eyes shining dragon is a card with the Yu-Gi-Oh! card game.
the crimson dragon isn't a card there is no attack points or defense points
an average of 20-50 dollars
£60
Currently there is no "dragon bow" in game, however concept art has been shown for dragon ranged weapons. In the EoC there is a Dragon 2h crossbow, but that has not been released yet so no one knows how it will be obtained or how much it will cost. According to Jagex the dark bow was an alternative to the dragon bow, as the dark bow is the only bow to fire dragon arrows at this time.
in amazon it costs $8.10.