As much as it sounds like you got shafted, the shipping is NOT comparable to getting an online quote. The whole process of buying a box, buying the soft padding that goes inside (unless it's shredded paper), getting the labels printed, potentially driving to the post office (unless it's collected from their place of business), this all takes time and money.
Whenever I've sold anything personally the shipping has been the most time consuming part of the whole exercise. It's a pain in the balls.
How do their prices compare when you look at item cost and shipping together? Are they $38 more?
Anyone who advertises "Free Shipping" or low shipping prices usually has buried the cost in the item itself.
There's nothing for free, and everyone has to make money, that's why they are in business.