Shrug. Seems like a fair price to me.
Somebody got a decent sized pine tree, cut it (one assumes square) debarked it carefully enough to not mess up the inner layer, rounded the edges, sanded it and finished it. Then they ship it for $154.
If you live in, say a New York suburb, and don't have a chainsaw, how would you get one cheaper? Hell I have a chainsaw, and all the stuff I need to finish it, and if Mrs. Mush decided she HAD to have a pine stump table it'd probably cost me half that price and a weekend to make one. (If she'd settle for Live Oak instead of Pine I could cut the cost a bit.) There's a LOT of places in this country where you can't just walk out and cut down a big pine tree for the stump.
Sure, If you have a sawmill handy, and are willing to take what they got, and can finish wood, and consider your time to have no value, you could get that cheaper, but probably not a whole ton cheaper.