Beer prices: It's sometimes the same price - or even a little cheaper - to buy an 0.5 litre beer ("pivo" ) than an 0.33 beer. Apparently this has something to do with the fact that the small bottles are not returnable but the larger bottles are. The beer is said to be the same. I don't get it, but I did take advantage of it.
Names of taxis: there are some interestingly-named taxi companies! "Pink" taxis are found in many cities, but apparently this doesn't have quite same connotations as it does in some western countries. And presumably the meaning of words sometimes changes in translation! (See image below).