Well i also think of that. But i think the spoil in the lens was my bad in handling the cam , really. So it's not because the cam was second hand, just unlucky. Anyway no point if i regret now , made the choice,do it and dont look back then.
it might be dated info but few years back when i used my GR10 (film) in US winter time (2 month), the camera drop few times and also viewfinder become fogging.....lenses was dusted due to california sea breeze. when come back to s'pore, i send the camera for service (already expire warranty) at ricoh service center (a warehouse, i forgot where is it...), it cleaned everything for me FOC !!!!
anyway Ricoh GR camera ROCKs !