Before revision:  We then move to a more general setting where the buyers' values are sampled from one distribution , and the sellers' from another, focusing on the case where the buyers' distribution first-order stochastically dominates the sellers' distribution .
After revision:  We then move to a more general setting where the buyers' values are sampled from one distribution and sellers' from another, focusing on the case where the buyers' distribution first-order stochastically dominates the sellers' distribution .