I think people underestimate this skill in various ways:
1: if you sneak and unlock starstones (like people do to get the teller of secrets at lvl 1 for max stat and attribute books which restock each level even in the current version on 29/11/2014 despite patch notes saying otherwise) this skill can provide hundreds of gold per normally empty container(even in and around cyseal), allowing for more than enough gold to buy both books each level, even at low levels, heck, even if you managed to use companions to keep your main characters at lvl 1 for max teller books (which can even be done with 2x lone wolf if you decide to take the talent later in the game on one of those characters). Level 6 lucky charm may give less chance of magic items but the piles of extra gold can exceed 500g per pile. 500g+ multiplied by hundreds of containers will potentially give you more gold than you will ever pickpocket in a lifetime...
2: have you tried it on higher level area's?
Example: if you sneak ahead and get the 3 stones from initiate quest (I solo'd Loic with a lvl 3 mage, flare and midnight oil without even entering combat, triggered from outside his sightrange), you can have 8 starstones at lvl 3 without using companions or at lvl 1 if you use a companion. When you have 7 starstones(had to cure alfie and use 2 bloodstones from basement on myself for no other effect than healing and unlocking a starstone) you unlock the imp area with the skill reset demon Moloch. There are bone piles in that room which normally do not hold any valuable loot. Lucky charm allows you to farm these for high level green or blue items which will sell for many thousands of gold or can be identified with lvl 5 loremaster and used for their high base stats like armor(ridiculous dmg reduction, more than one of a stat per item, etc). It works for any container in any high level area, this room is just a good example. Without lucky charm you would get nothing, now you get thousands of gold and/or stats/abilities which are not available on gear of your own level (especially if ur still level 1-3 or so when u do this).
3: If you understand the formula which applies reputation(inc. charisma) and bartering to calculate how far from the true worth the prices are, you will know that merchants buy and sell depending on those factors. I would recommend raising one, preferably the teller first, up to max reputation by donating (10 x vendorlevel) gold per 1 reputation and using a few +barter items like rings amulets and boots and the smelly panty for charisma. Even if you get unlucky a lot and get scrolls and less valuable items you can still sell them for a lot more when the price is right. Even IF you failed to get very lucky, the total sum of stuff you would get from 1 walkthrough without saving or loading can easily exceed 100.000 goldpieces.
4:if you feel like you are getting enough gold to buy anything you want you can always use moloch to reset your skills and spend the points originally used for lucky charm on something else. Personally I use the reset around level 7, with almost half of cyseal still uncleared. TIP: don't learn any new skills yet unless you can replace them with new books. The total reset costs you all your spells and other important 1 time use special items. This is why you want the reset fairly early, or have to spend a lot of time and gold getting your skills back. Unique one time use items other than the teller tomes will be forever lost! (This includes losing the ability granted by the skillbook for using tenebrium without getting rot, or granted to your party by Brandon in silverglen). In other words, you can always reskill, so use lucky charm as long as you need it for ridiculous extra gold and early high level loot with uber stats/value and then respend the points on whatever you want later.
So long story short, 500+ goldpiles rock hard, visit high level area's and loot containers which would normally suck lootwise with lucky charm to get insane stats/gold value for your level, manipulate the vendors for max gold per item value, and last but not least, you can always reset the points later so there is no real reason not to use the skill in earlygame.
I'd say anyone who does not appreciate the skill lucky charm does not know how to use it to it's full potential :D
