What is the best/cheapest way to ship heavy items 150-500lbs

I have been in the swimming pool business sinse 1995 and have just recently starting selling online. I will be starting an online swimming pool store this spring.

I would like to sell above ground swimming pools, spas, tanning beds, etc. What is the best and cheapest way to ship heavy items? I would like to have items picked up at my warehouse. If anyone has any information on the best method, please let me know.

Thanks
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Go to Link hidden: Login to view setup an account and they will give you an estimate on shipping through many carriers. Thier rates are very very good.

This site can help you get rates from the biggest carriers avaliable and get the lowest possible price on heavy items and even huge loads.