Crafting becomes a pain from level 30 on because every shard requires huge amounts of Essences.
Getting Essences is very difficult
if you don't have a capped toon. Auction House proves impractical to get essences in sufficient amount. And deconstructing items is a viable option only if you are high level enough.
Let's take an example. One toon is level 20. In any quest chest of his level, he gets
Dexterous +1 Boots of Swimming +10 or any other similar junk loot. These boots are a +6 item, minimum level 13, with a +1 Prefix and a +5 suffix. If you have half a brain you'll deconstruct the suffix for the best yield, Level 5 Body Essences, an average of 35.52 lesser and 1.15 greater essences (figures courtesy of DDO wiki) and up to 49 Lessers and 7 Greaters. Wonderful!
Another toon is level 13. He gets much lower level loot on average - say, a
+4 Impact Mace of Shattermantle. That's a minimum level 10 weapon. But when you try to deconstruct it for the best yield, you can choose among a useless +4 Enhancement Spirit, a Level 2 Earth Essence or a Level 2 Chaos Essence. That's 4.12 lesser and 0.53 greater on average, accordingly to DDO wiki. Almost 1/6th of the net amount of essences obtained from higher level loot.
A mid-level character will have to put five or six times the effort of a high-level toon to get the same amount of essences. That's rough figures. And with 10.1 update adding Soul Gems to the mix, it will be even worse for lowbies. Trying to earn crafting experience with a non-capped toon is simply a dead-end. Better cap your toon first.
Oh, and anyone thinking Soul Gems is the "answer" and telling anyone "can simply purchase them over the AH" should have a look at the price of Soul Gems: Essence of Earth on a server. And these gems are only used for Adamantine Rituals so far.
I don't have any instant idea to fix this issue, but clearly, generating essences is crippling if your character does not have access to high level random loot. That's probably why some claim that "getting essence is easy" while others complain that it's "too **** expensive".