E-Waste management/sell electronic products

I want to sell..

Old PC, old mobiles and other electronics.

I found some sites on Times Of India news paper

RECYCLE & REUSE

sites are...

1. *www.reglobe.in/
2. *budli.in/
3. E-Parisaraa , Electronic waste recycler in india (government authorized)
4. Attero is an integrated end to end electronics asset management company.

please tell me which will be better site for selling old pc and mobile etc..
some sites give cash for e-waste

Sorry for repeating this post.. I don't know where to post this. So posted in multiple sub-forum.
Electronics include pc, mobile etc.