Bad time to buy, good time to be selling. The prices have increased purely due to a lack of supply since the factories & roads are flooded. The actual manufacturing costs haven't changed, so retailers paid the normal price for them and are now making 4-5 times their regular profit margin.
Just as well i picked up a 1TB 2.5" portable USB3 drive 2 weeks ago for $70, it's now closer to $150 lol.