1 Additional collars for additional dogs cost between $55 and $130. 2  A do-it-yourself kit may not include enough wire. 3  Additional wire costs between $23 and $70 depending on length (usually between 500 and 1,000 feet) and durability. If living in an area with frequent thunderstorms, consider buying a lightning protector. 2  These cost between $35 and $55. 3  Keep in mind that an invisible fence doesn't keep other dogs, animals or people out of the yard.
Import finance allows both the importer and exporter to be free from assuming an excessive amount of risk.
Import Quotas. Import quotas are a form of protectionism. An import quota fixes the quantity of a particular good that foreign producers may bring into a country over a specific period, usually a year. The U.S. government imposes quotas to protect domestic industries from foreign competition.