To be honest a 2 year old tester will be old if it has done a lot of work. Some people who are testing day in and day out will want the latest kit because like owt else technology improves and test kit is no different, these improvements make the work quicker and easier.if you can shave 30 minutes off each PIR or whatever then the latest gadget soon pays for itself. So this is one of the reasons you will see a lot out there. Another reason is THEFT, scrotes nick our kit and shove it on ebay to make a quick buck, so tread carefully when you buy it may have been gathering dust till the dust settles so to speak.
Secondhand kit can be good value, but my mate had his Fluke 1651 nicked out of his van, he paid ÂŁ250 for it secondhand. He replaced it with a brand new Fluke 1651B, which came with far superior leads, all the kewtech lightmates, R1R2 adaptor, R1 R2 jump lead kit, remote test probe, R2 wander lead, and 12 month calibration certificate, and a penny change out if ÂŁ400 delivered. If you add all that lot up, then his ÂŁ250 secondhand one wasn't such good value after all.
Cheers........Howard