There is one person (harriawarner/think usmle) who is selling various USMLE materials online. There is no point to provide the name or email id because he keeps changing his email id and identity. Materials include various qbanks, picmonic videos, Sketchy Medical videos and many more for step 1, 2 & 3. Be aware that this person promises to provide the updates as they become available but he will never fulfills his promise. For example, I bought lots of step 1 materials from him and asked him when some updated videos were available from picmonics & sketch medical, but he denied to provide me the updates. So, I just wanted to warn others from falling into any trouble as I did.
Please PM me if anyone have any more questions regarding this matter.