Shipping on pallets

From time to time I buy or sell a big pair of speakers or a big heavy amp that would be best shipped on a pallet. I struggle to find a shipper and don't have the means or tools to successfully strap items onto a pallet- though I do have access to pallets from time to time. Any advice on what service or the best way to accomplish this ? Or, should I just stop buying and selling heavy product? In a few years I won't be able to carry a 100 pound amp down the stairs to my listening room anyway I 'm guessing .