The blender costs $100 to manufacture, and the U.S. firm plans to sell it for €150—which is competitive with other blenders that were made in Europe. If this plan is successful, the company will make $50 in profit because the EUR/USD exchange rate is even. Unfortunately, the USD begins to rise in value versus the euro until the EUR/USD exchange rate is .80, which means it now costs $0.80 to buy €1.00.
In situations of economic uncertainty like we are facing right now, the best defense for your hard earned dollars is to be as well-informed and educated as you possibly can. Following the news that impact the markets, researching companies and following the markets should be a full-time job (unless you want to risk your money... you are probably better of at a roulette table).