Your argument is invalid. If BTC were at 50$, the BTC price of those gadgets would be 10x.
Your argument in invalid, If BTC were at 1000$, the BTC price of those gadgets would be 0.5x
But We are talking about current price not past or future.
Ps: aren't you talking about current buying price? If BTC were at 50$, you will get 10x btc too..