Buying the RIGHT gems for your armor also increases the efficacy of your abilities. It is important to research the various gems available to you before going to the auction house. This will help you select the one that is best for your talent spec. Stay away from the low grade gems! Buy the good kind. Again, the goal is to be sure your character has the maximum amount of upgraded stats available. I’ve often heard others grumble about the cost involved with purchasing the quality gems. It’s true that this can get expensive, but raiding is not cheap. In order to see and experience more end-game content, you’ll have to spend some gold. No gold? Do some dailies or use your professions to make money. Personally, I am only interested in raiding with other people who make the same effort that I do. Guilds that are forced to carry several of their members who refuse to do the work don’t progress as quickly. I was in a guild like this before the release of Wrath of the Lich King and there are several bosses and raid dungeons from Burning Crusade that I never had a chance to see.