Well you can try and buy a brand new SP miner now if you like. Oh wait they don't sell them anymore... Besides they were not bought 1 year ago it's been since November so that's 7 months.
I would also like to buy a VW Polo 9N3, but they stopped making them in 2009 and nobody is asking the full price for a second hand car and nowhere near the full price of a new car so get real and lower the price.
What I see here is that you haven't considered that the exchange rate may go down and you never prepared for this. It's your call if you want to still mine with them or to sell them and by the looks of it the miners will stay in your possession. Good luck!