Most often, the prices that you see on the websites are not the prices that you can get if you get on the phone, set up an account and get assigned to a sales rep. Once you do that you can then 'haggle' with your rep. The reps normally make thier money by commission and are really looking for long term customers. That is why it is very improtant to build a good solid repor with your rep.
The reps have a base price that they sell the products for and having such gives them leeway as to what price they actually give you. You can and should strike deals with them by letting them know that you will be a long term customer if they can help you with prices that can make you competive in selling their product.
Yes, often you may not want to buy 100 widgets at a single purchase, but let them know that perhaps you will be buying 10 widgets every week if they can help you with the price...Most often if it is a legitimate wholesaler they will work that kind of a deal for you...
I've even had some sales reps that once they have gotten to know me and know that even though I purchase smaller lots, (but on a regular basis) will call me and let me know when they get something good in that is along the same lines as what I was selling. It all goes to helping each other out., You help them makes sales and they help you with good prices..But you have to keep in touch with them (and I mean by telephone) if you want to build any kind of a relationship....