Are there situations you buy smartphone from second hand? Used iPhones can be even 31-50% cheaper then new model.
But it can be risky - warranty could be cancelled or phone could be blocked due to thieft.
So we gave you free tool to check iPhone warranty and Find my iPhone status. All you need is IMEI and seller should be able to give you it without problem.
At the moment we can give you partial status of Find my iPhone (on/off) but in near future we will inform you if this IMEI was reported as stolen/lost. This service is free.