We can offer a bounty of $500/£300/€350 for the port of the UC Node Checkout module before Monday 17th October - realise its crazy short notice but we need it for then otherwise its not worth it for us. Some work has already been done, please check this issue: http://drupal.org/node/1172060#comment-5115666
We would of course require that this port is submitted to the issue queue to be used by the community.
Drop me a line if this is something you can deliver.