Alchemy, fun but expensive!

Today i have mostly farmed for Alchemy synths and done some skillups, and A LOT of muling.
Things are getting quite expensive even though I farm all crystals and atleast 40% of the materials.. I'm currently at 26.1 doing "Eye Drops". One batch cost me 49k and if/when it sell will bring back about 35k and I gained 2.3 skillups on it. So thats roughtly 6k/1 skillup. Not so bad, but the problem is all the stuff that fills up my Moghouse and mules, and is a bitch selling..