I doubt it will be cheap anywhere online to ship, its not light.

I am not from America let alone Michigan but how far is Ann Arbor from you? thegrowshow.org

The Grow Show
Stone School Plaza
4095 Stone School Road
Ann Arbor, MI 48108

I am sure there are plenty of places that sell it in detroit also.

BBrush, thank you for the information! I am pretty close to Ann Arbor and go there very often. Will check out The Grow Show.

But I must have confused hydroton with something else. When I was in Europe for work last year, I saw something they call seramis. It is very light, like perlite. I thought hydroton is something similar.

I will check it out anyway. Thanks again!

Hydroton is light. not as light as perlite, but nothing like the weight of bricks. I was surprised the first time I picked up a bag myself.
Our local shop sells the 50L bag, I believe, for about $50 USD.

You are right, just realised the bags I buy are 100 litres not 50.

So the shipping fee of $73.93 (that is JUST the shipping fee, not the total cost) sounds expensive, doesn't it?

I think they probably entered a wrong weight in their system, and the software was not intelligent enough to combine 2 orders of 50 liter packages into 1 shipment.

You think thats bad, I wanted to buy some net cups from this site ( hydroponics.eu ) and even though I live in Europe my country isn't on their Europe list and so for one net cup that costs Â.90, shipping is Â80, customs Â60 and just to be nice they add a Â5 packing fee, coming to Â145 (US$195) for a 100 gram Â.90 net cup.

LOl! Bbrush, your case was indeed crazier! :-)

I had a similar problem with buying some mister heads. they wanted like $15USD for S/H of 20 of them.
A simple exchange of emails and it was straightened out.
I would suggest you email (or call) them and verify the amount quoted. 100L won't weigh terribly much, but it does take up a good bit of space. For the Americans here, remember one gallon is approximately 4L, so imagine stacking 25 gallons of milk together and shipping that. That would likely be considered an over-sized package.

According top http://postcalc.usps.gov and weight/dimensions at http://www.horticulturesource.com (41.82 LB - Dimensions 28. x 16.5 x 7. IN) it would be $23 to ship a 50l bag from NY to a random Michigan zip code.