It doesn't matter what the diff is. Your profitability will be EXACTLY the same.
People with S9's can mine coins with low diff also.
Maybe you're right. Thanks for reply.
Sell them on ebay as collectors items
the first BTC asic ever made.
http://www.ebay.com/itm/ASIC-Bitcoin-Miner-Block-Erupter-USB-330MH-s-BTC-USB-SILVER-COLOR-/132023342072?
http://www.ebay.com/itm/ASIC-Bitcoin-Miner-Block-Erupter-USB-330MH-s-BTC-USB-Black-/182381687017?
as you can see they sell for high prices more as a collectors item.
once you sell the five
go to this link
https://bitcointalksearch.org/topic/general-sales-closed-gekkoscience-2pac-2x-bm1384-usb-stick-miner-1718358
buy 2 or three of them.
Oh! Thanks, that's a nice idea)