When I mentioned Solo – a way to play the Traveller game by yourself – I forgot to mention a (far cheaper) predecessor, Star Trader. Unlike the full-featured Solo (complete with exploration – my favorite!), Star Trader is just about trading.
Still, you can’t pass up a quick and cheap way to make a few credits, hmmm?
(I am 100% confident that I am missing another book/pdf to play Traveller solo, but I can’t recall the title at all. Any prod to my memory would be appreciated!)