Results 1 - 10 of about 93,600,000 for Praha. (0.20 seconds)
Results 1 - 10 of about 71,800,000 for prague [definition]. (0.20 seconds)
The google map that pops up for "Prague" reads: "Praha"
Estibot values "Prague.biz" at $1200 based on traffic. The keywords seem evenly priced so you could probably get that or more easily with a similarly developed site. Add some affiliate programs and you could get a pretty decent revenue stream.
The extension hurts for pure domain resale value but it's a very nice keyword.
If you have an offer and don't plan on developing it, $500 isn't bad for a .biz normally. Some words and phrases rise above the extensions though, within reason. This one is registered in almost every other gTLD extension. Some of that is probably because it's a pronounceable 5L, but it's a factor to consider. I would hold out personally, but I'd also be developing it so you have to make the call ultimately. Reg fee -> $500 is a good margin and you never go broke taking a profit.