This presentation provides a summary discussion of "market-ish" instruments for environmental service provision. Choice of an instrument should be based on the objectives and context of a program. Although the definition of Payments for Environmental Services (PES) includes the roles of both service users and service providers, attention is primarily given the service providers and not the users. A shift to service user-focused PES mechanisms ('supply-side PES') could make PES outcomes more cost-effective by basing payments on user WTP (willingness to pay). The presentation concludes with discussing when PES is potentially useful and issues involved in paying providers.