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Guidelines present cost-benefit analyses (Table 2.6) as one of the most important approaches for prioritising adaptation options. Nevertheless, it is very likely that only a few countries will use this method as this approach depends on the availability of information on costs and benefits which is still poor and involves many subjective choices. A general recommendation is to use various methods for cost-benefit based prioritisation (Table 2.6) to stimulate learning: different approaches represent different ways of problem framing, may be applicable in different situations, have different strengths and weakness and can lead to different solutions (Swart et al. in Prutsch et al., 2014). Further work is needed to better understand the added value of prioritisation for countries, taking into account various methodological approaches.