I buy most of my supplies online from wholesalers. If you buy in large quantities (for business) I'd recommend getting a federal tax id so that you can buy wholesale and save on sales tax. However, I also buy from local suppliers occasionally.
Here you'll find:
* Larger and a more unique supply of trim and ribbon than the average fabric store
* Service that is more personal and friendly * Bulk discounts if buying full rolls
* Great classes and instruction
Even if you don't sew or typically seek supplies like this, I encourage you to visit. It is amazing how you'll be inspired by something you see. You will find things you never thought you could use or need.BTW, another local haunt of mine is Lorraine Fabrics, in Pawtucket, where you can find lots of upholstery. I spend a lot of time on the second floor where fabric is $1.99/ yard. Okay, now the secret is out!!
I have spent years online and on the phone to find the best prices for my supplies. I travel to NYC to scour the garment district. Along the way I've found that sometimes thinking out of the box will land the best suppliers. This explains my love for hardware stores. I've made countless awkward phone calls talking to people who thought I was nuts, "what is this girl doing with seat belts and why would she call us?" I even bought webbing that was primarily used for lifting caskets (no worries, I could never bring myself to use it). I currently buy my seat belts from a local source (I'm sorry I can't share publically due to being burned one too many times by ruthless competition) whom I researched and called and convinced to sell me their overruns. It's industrial and industrious, but I get the best deal around (and there's something about talking directly to the guys in the warehouses).
So, how do you seek your suppliers?
What do you do to find your deals?
Do you have favorite local resources?