Those are definitely famine prices. A choenix [1] is about 1 quart (4 C), and a denarius was one day's wage for a laborer [2]. At, say $10/hr, a day's wage is $80. A 5 lb bag of flour has 18 C [3], so that would be $360 for a normal bag of flour! Barley is better, at only $120 for a 5 lb bag. When I've baked bread, about 8 C of flour produces 3 loaves, so a loaf of (manually produced) bread would be about $50!
The text is presumably describing a famine produced by drought, which were regular occurrences in the ancient world, rather than by siege. In the latter, the price of all food rises because the supply is dwindling. But a famine in the highly-connected ancient Mediterranean world would not necessarily affect other areas. Egypt supplied a lot of grain to the empire, so a drought in Egypt would affect grain prices empire-wide. But a drought in Egypt would not necessarily affect olive oil production in, say, Italy.
Regarding Revelation, though, each generation thinks the end times is their generation. One (potential) wheat shortage is hardly enough to qualify as meeting the prophecies... Besides, if we're just going to quote Bible passages, "there will be wars and rumors of wars, but the end is yet to come" (Matthew 24:6) [4] Besides, the only one of the 4 major interpretations of Revelation that actually makes sense of the entire text is that most of the end-time prophecies are about the destruction of Jerusalem in AD 70, which is called preterism (and also partial-preterism). While this does not preclude multiple fulfillments of a prophecy, OP presented no evidence for why the prophecy this out-of-context verse applies to the present situation.
The text is presumably describing a famine produced by drought, which were regular occurrences in the ancient world, rather than by siege. In the latter, the price of all food rises because the supply is dwindling. But a famine in the highly-connected ancient Mediterranean world would not necessarily affect other areas. Egypt supplied a lot of grain to the empire, so a drought in Egypt would affect grain prices empire-wide. But a drought in Egypt would not necessarily affect olive oil production in, say, Italy.
Regarding Revelation, though, each generation thinks the end times is their generation. One (potential) wheat shortage is hardly enough to qualify as meeting the prophecies... Besides, if we're just going to quote Bible passages, "there will be wars and rumors of wars, but the end is yet to come" (Matthew 24:6) [4] Besides, the only one of the 4 major interpretations of Revelation that actually makes sense of the entire text is that most of the end-time prophecies are about the destruction of Jerusalem in AD 70, which is called preterism (and also partial-preterism). While this does not preclude multiple fulfillments of a prophecy, OP presented no evidence for why the prophecy this out-of-context verse applies to the present situation.
[1] https://en.wiktionary.org/wiki/choenix
[2] https://www.biblegateway.com/passage/?search=Matthew%2020%3A...
[3] Google: "how many cups in 5 lbs of flour"
[4] https://www.biblegateway.com/passage/?search=Matthew%2024%3A...