Super-Replication with Fixed Transaction Costs
  We study super--replication of contingent claims in markets with fixed transaction costs. This can be viewed as a stochastic impulse control problem with a terminal state constraint. The first result in this paper reveals that in reasonable continuous time financial market models the super--replication price is prohibitively costly and leads to trivial buy--and--hold strategies. Our second result derives nontrivial scaling limits of super--replication prices for binomial models with small fixed costs. 
Peter Bank and Yan Dolinsky
q-fin.MF