The new requirements to join the random instances and raids apart from the ilvl include the silver achievement of the Proving Grounds, be better than that and get the 30 Endless Waves achievement with us, or any prior achievement on the Proving Grounds!
Prices for these services are:
Bronze/Silver/Gold: 7€
Endless 30 Waves: 23€
Requirements:
610 ilvl+ gear in every slot.
Gear should be enchanted (neck, cloak, rings x2), including the weapon enchant "....."&Flask