Bitcoin Forum

...and you paid for your miner with now expensive coins, do you buy back those bitcoins with fiat, to effectively pay less for your miner?

No, I will dump and rebuy.....

So you buy a miner using BTC, with the price at $100USD/BTC. You pay 25BTC.

Price drops to $50USD/BTC. Your miner that previously cost 25BTC now cost 50BTC.

You buy 25BTC at $50USD/BTC, totalling $1250USD. You think this somehow means you paid $1250 for your $2500 miner?

What's paid is paid. Buying back coins after the fact doesn't do much.

I bought a Newegg gift card a long time ago, when the price was between $2.50-3USD/BTC. Used it to pay for an SSD. Now, does the fact that I paid 45BTC make it a $4,500SSD? No, it's still a $120 SSD.

ORLY? Because I think a USB Eruptor cost ~2btc when the price was at $115 and costs ~2btc now at $100.

So I think what you're asking depends on whether the item being purchased is priced in USD, or BTC. That 2BTC price does not fluctuate. A BFL Jalapeno is priced in USD, so the BTC paid will vary depending on the exchange rate.

Forget what you paid for the miner. The only important things about the miner are:

• Its potential future earnings, in BTC and in fiat. This requires estimating difficulty and exchange rate at various points in time in the future
• What people are willing to pay for the miner now. You might get a good deal selling it to someone.