It will cost about the same currently on cex.io to buy .333Ghash as it would to buy an erupter. If you like hardware and learning physically hands on buy the erupter and spread some of the distribution. If you just want to get into mining to see what it's about you can try cex.io. You can resell erupters currently for about what you pay for them the same at cex.io. These are comparable options depending on what your goal with mining is?
If you go the cex.io route I can send you a referral link (which I don't care to post publicly like some do to gain more hash
), overall I do both and enjoy both the one thing I can say about cex.io that you can do that can't be done with erupters is "day trading" once you fund your account you can buy and sell a few times throughout the day to gain slightly more. You obviously can be burnt doing this and lose just the same, but again it depends on your personal goals.
