You CAN spend hundreds of pounds on a PAT testing machine, but you really don't need to. For PAT Testing in a school, for example, you can test everything with a simple pass/fail device such as the BattPAT which is currently available for about £200 + VAT!
PAT Testing Labels can cost from about £5.00 for a roll of 500, so it's not too bad!
I know many people think that you have to do countless 'tests' on each piece of equipment, but that is just not the case. On our PAT Testing course we spend a lot of time talking about the importance of common sense, and the need to do thorough visual inspections. If done correctly, the visual inspection will identify the vast majority of faults, and you don't need a PAT testing at all to do that!
In my previous role as head of a large PAT testing company I oversaw the testing of 300,000 items per year, and based on that experience, we now recommend people 'keep it simple.'