What is the cheapest way to travel from Vientiane to Khamsavath Train Station for a direct train to Bangkok?

The user is seeking advice on the most affordable transport options from Vientiane to Khamsavath Train Station to catch a direct train to Bangkok. Suggested options mentioned include bus, car, motorbike, tuk-tuk, and even walking as a potential cost-saving means. Community responses included a link to a relevant bus post, and a reminder that walking is the cheapest option.