Total price is all that matters. Free shipping is a myth, the seller is just eating the cost in that case.
The only bad guys here are the shipping companies themselves. Negotiated prices where one buyer has access to prices another doesnt, are fundamentally wrong and probably shouldn't be legal. They can only afford to give big companies discounts because they overcharge small companies. Effectively the big companies are subsidized by the little companies.
But there's nothing livestock sellers can do about it, shipping costs money.