1 point will buy you a universe. Power Words are 10 times that, Sorcery 15 times, Conjuring twenty times that. Assuming that points reflect effort and or scarcity, this means that acquiring a basic magical power is 10 to 20 times as difficult as conquering an entire universe!
No wonder we don't see many magicians running around....especially since mundanes have no way of acquiring points, and so will be stuck with a slab of Bad Stuff - a probably fatal amount of Bad Stuff, as they are acquiring it at the same time as they are acquiring a new dangerous Power to play with.
However, suppose multiple individuals can work together to pay for a Power? If 10 magicians pay 1 pt each, so that working in tandem, they have Power Words, then the difficulty is 'only' as great as conquering a universe - insanely difficult, but now possible.
There are other advantages. Using a Power Word will exhaust a mortal; but assuming a lead character projecting the Word, a cabal of magicians would each be able to evoke a Word before being forced to stop. Similarly a cabal with Sorcery could 'hang' a different spell on each magician.
Of course, getting enough individuals together to achieve this will be tricky...but is it necessary? For Conjuration, a created item can exist across Shadow; a mortal who understands about Shadow might do 1/20th of the work of creating a cross-Shadow item, confident that in infinite Shadow, at least 19 reflections of himself will be available to complete the needed creation. Such a group, if successful, could then use a 'Seek through Shadow' item to collect allies who can provide the other magical abilities, allowing the creation of a far wider range of items. Adding the Horde multiplier will ensure that every participant will benefit from each creation.
Of course, conflict within the group is still possible - especially as everyone has a point of Bad Stuff, ensuring that everything said is taken in the worst possible way! Further, those using Sorcery and Power Words will need to operate together, forcing them into aggravating situations.
The 20+5 who provide Conjuration have the final word on what items are created of course; balanced against the additional power of the 15 providing Sorcery. Those with Power Words would quickly find using their Words pointless, as items can effortlessly replace their abilities; but would probably push for constant exploration, to find more people who can provide more Power Words - a possibly endless supply of new abilities. The simplest way to shut them up is to ensure that they high the items they need to explore without further bothering the Enchanting group. They are the individuals mostly to run across PCs: and the magicians usual spiel (some variant of "rejoice! We are of ultimate power, and can richly reward you for joining us: we can develop your thoughts on magic into workable form") should highly amuse beings at an Amberite level of power.