They receive registration documents for the ships, but they have to travel to Glisten to pick up the ships. The person who is giving up the ships helps arrange high passage to Glisten, but the characters have to pay the fare.
But it's all a scam. The ship for the first two jumps will be a luxurious subsidized merchant, but the rest of the trip will be an assortment of old hulks, where high passage isn't as good as middle passage on a decent ship. The person who scammed them is pocketing the difference between the price they pay and the actual fares. But at least they have the ships waiting for them at Glisten.
But no, that's a scam too. The ships that they won aren't real; they were fictional ships on a comedy show from Lanth. When the characters get to their contact on Glisten, the contact gives them souvenir ship models from the show, each almost a meter long, made of top quality plastic.
Meanwhile, the people who gambled away the toy starships is busy trying to steal everything the characters own, as long as it's movable. The farm vehicles from their estates are gone. Their air/raft limousines are gone. Their mansions have been burglarized; even the plumbing is gone, stolen for salvage. Even some of their financial accounts are cleaned out, because the thieves found the access cards during the burglary, and figured out the access codes by searching their computers.
After all, if a deal sounds too good to be true, it probably is.
At least they still have the lands of their estates, and the bulk of their financial assets, which couldn't be removed without visiting their brokers in person.