I take it you are laughing at the price as a comparison to perhaps Whey Protein powder?
If this is the case, although at first glance without looking into anything it seems the same as protein powder, Bovine Colostrum is in a bit of a league on it's own.
Firstly, obviously there is a price to pay for the milk of a cow that is only available for a few days after a calf is born as opposed to the milk used for Whey that can be extracted at anytime.
Secondly, a price comparison to "protein powder" is incorrect (if this was what you are laughing at as a comparison price). Although high in protein also, it is a better comparison to a Pro-Biotic type of product. As an example, the popular Inner Health Plus Pro-Biotic capsules contain 67mg of Bovine Colostrum in each capsule.
For $50, you get 90 capsules.
67mg x 90 = 6,030mg ($50).
$140 as you stated, gets you 1,000,000mg (1kg) of Bovine Colostrum.