All shipping contracts visible on all local markets where destination/origin matches the market.
An example what happened to me today. Traveling Vallis > Moria station. No contracts in Vallis local market, but Moria station had 5 shipping contracts Vallis > Moria Station.
Also as I have written before, filtering of contract by destination would be great.
Or simply remove the local markets, and create centralised market where one can filter destination/origin. Done. No need to click twice to check out available contracts. No searching among many contracts with different destination.