Yes, there are certain rep-realted recipies that are much cheaper to buy for JC in the higher levels... however i have NEVER sold a piece I made from one of them, and most of them require lovely mats like khorium, primals, etc... so even if the recipie were free you would STILL be losing large ammounts of gold trying to level that way.
So I would suggets trying a little math before you look a using those recipies to level from. On my server at least it's usually possible to get a decent gem cutting recipie for arround 300-400g. Assuming you get something that is in some demand (red, blue and yellow gems sell better) you can generally get between 30 and 60g per cut gem.
Even assuming that a: you get a fairly expensive recipe, sell the gems reasonably cheap, and get one skillup for every gem you cut, you should still be able to break even on buying that 400g recipe.
If on the other hand you chose to level those 14 points off of a jewlery recipe you will probably be out not only the cost of the recipe, but the cost of materials as well, Leaving you signifigantly in the hole at the end of it all.
Just a few points from my own observations.