The bus ticket across the Cambodian-Lao border was US$15 from Kratie, Cambodia to Don Khong, Laos (part of the 4,000 Islands). It was an easy ride on a VIP Phnom Penh Sorya bus that stopped at the border for a mere 30 minutes while the bus company took care of our visas on arrival for Laos and our exit stamps for Cambodia – a service they offer for $1. So to dispel any rumours (and regardless of what Lonely Planet’s Southeast Asia on a Shoestring 2010
says) the visa on arrival to Laos at the Laos-Cambodia land border is available and costs US$40 for a UK passport and US$47 for a Canadian passport.