so ebay is the best right
If you're wanna doing a mining in this time better for reading about the another article or discussion about mining, seems like you're lack of knowledge about mining according to from your word and totally that's will make more effective for you if you're wanna for learning about mining before building your own mining rig.
Ebay are the best place but I think this will worth with your amount, and how many exact amounts you have and let me know about it for giving the another information.