wish to file a suit for recovery of unpaid export bills worht us$ 108750 from a singapoer party. Please inform cost and time taken for such suits

Collecting on a debt owed by a foreign debtor has a lot of variables. If the debtor has sufficient contacts to be subject to the personal jurisdiction of the U.S. courts, it might be possible to sue here (at relatively low cost), then enforce any resulting judgment in Singapore. Otherwise, it may be necessary to sue in the Singapore courts. You don't provide any of the details of the parties, of the underlying contract (and whether it contains a "jurisdiction" clause), so it is not possible to be specific. You need to contact an attorney who does collection work, possibly internationally. If you need help in thinking about this, please call our office.