GB Smilers Sheets

Is it just me or is the issue of Smiler's sheets getting out of hand?

It seems that every Tom, Dick and Harry is now jumping on the bandwagon;
there is a plethora of issues on ebay (seemingly the main source for this
material) and the prices are becoming ridiculous - many are £57-£85.

What do others think? Do you even bother collecting them? Are you happy to
pay the price? Are these items considered a significant part of a serious
QEII GB mint collection?

Cheers,
Steve