If they really were near the Seychelles, it's not that close to Somalia, nor where the pirate activities are the strongest. And quite a few people sail there !
It looks like the liberation cost a few buck, from your link :
There was no official word on whether a ransom was paid, but the BBC's Frank Gardner said it was "the best part of $1 million".
A payment of about $430,000 (£267,000) was made in June, but did not result in the release of the Chandlers, he added.
New Technology is the name we give to stuff that doesn't work yet. Douglas Adams