Ask a Vegan Baker

Hi! I'm new to this community but I've been a fan of this site for awhile! Great information on here!
I'm a vegan baker and have recently started my own business. What I'm interested in is reducing the amount of unnatural and potentially harmful chemicals in any of my ingredients. I've done a great job with this as far as cakes and cookies, etc, but when it comes down to frosting... I'm at a loss! Currently I use a brand called Brill who assured me there's no animal ingredients in their frosting. I use their "Light n Fluffy" frosting which is DELICIOUS and all my customers love it, but it has some not-so-healthy ingredients that make me cringe! I love the taste, but if I can get something better then that would be great!
The thing is I'm trying to also be cost effective.
I can get this frosting for $100 for a 35 lb bucket (including s&h).
If I were to make my own frosting using Earth Balance and coconut oils, etc, I'm afraid it will be too expensive!
But there are some really great vegan bakeries out there, so I wonder... are there any companies that sell vegan frosting in bulk that uses better ingredients? Any bakers out there have any favorites you can tell me about? Or any ideas on making it more cost effective to make myself?

Thanks so much for your help!