Yesterday I read an interesting post. I hope that I will be able to earn Hive by posting for a long time. But if that option would dissapear soon and Hive would reach the heavens I would really be sad that I did not acquire more while I could.
As for your question
What does one single Hive buy in today's money in your location
Yesterday I paid a few eur for a bag of candy. So I imagine that I could buy at least one candy. I think that spices like parsley or dill are quite cheap so probably could buy a little. But I have no idea how much. a handful maybe...
Holding a little in reserve means you'll be in a position to capitalise on your efforts; I think it's a smart way to go. With Hive being worth so little fiat currently it makes sense to hold on to some and keep it for future gain.