You guys are terribly late, burst was insanely profitable ~8-6 months ago (like ROI in 20 days profitable) but quickly dropped off once more people caught on, right now its totally meh. On the bright side - the mining itself doesn't really burn the HDD's, they are written full just once and after that its read-only, you can sell off the drives as almost new even after years of mining.

As for the HDD prices going up because of this - they already did, you just didn't notice because you weren't paying attention. All the 5tb+ drives took a 50% price hike when it was popular, hasn't dropped off since then.