RE: HL Pershing
I never bought one of the non-smoke and sound versions so I cannot really comment. But, based on the overall consensus it sounds like more of a gamble because the newer HL's (regardless if it's a Tiger or Pershing) have improved electronics since they are of the "New Generation", or shall we say a more recent innovation.
Just because it's on clearance does not mean that it will be prone to failure. In essence, all HL tanks are prone to failure. However, Mato is a reputable dealer and should be able to resolve any problems should any arise.
This does not rule out that your cousin cannot upgrade the electronics if they should fail or become problematic.
My advice would be to persuade your cousin to buy the S&S version of the Pershing as it will provide more realistic tank operation as the speed control is akin to proportional instead of OFF and FAST. Not to mention the smoke and sound functions make it more fun.
-Harq