How much were the 1070's 6 months ago?
Most were around $410 give or take $30, with the "water cooled" cards closer to $500.
That's NewEgg pricing, BTW - I gave up on eBay a long time ago when they started pushing Paypal as their primary payment method.
410 is very high for a 1070
I bought a g1 gigabyte 1080 for 450 3 months ago
Edit - and anyone know reputable pools for MONA mining? Clearly the best bet at the moment.