When you buy with bitcoins you are essentially selling them. So make sure you buy the corresponding number of bitcoins.
When you get a refund you are essentially buying bitcoins. So sell the corresponding amount.
That way your loss will be minimal.
Ok, now 400M diff is coming up in 2-3 days so you better be ready. When the pricing for October H-boards was first announced at $350, the difficulty was what? 25-50M? I don't remember the exact numbers. But I do remember people on this forum projected 100M to 200M by the end of October. Those people were flammed, others called them crazy.
Than after August sold out in hours, the price was jacked up to $500. But going by what they are really worth, they should be in the $50-$100 range for mining to be marginally profitable.
The problem is that the network is growing faster than anybody anticipated. Today, many believe that network WILL NOT continue on its path up. Well, guess what, it most likely will. It will flatten out at some point. When?
When everybody and their mother will think it will never flatten out.
Lol. YEs, the only company that increased prices with increased difficulty for those specific cards! Go figure!. Bitfury should stop sucking all miners gains and they should only care about keeping a reasonable USD margin. That's what their business model should be. An engineer friend of mine who works at Intel just saw one of my h-boards a few minutes ago and told me there's no way the marginal cost of that card is more than $100. It's a complete rip off for dummies.
Ask your friend about Intel's pricing model. or, any other company producing a product.