Horntail Glitch.

Non-instanced bosses piss me off.

As the fucking should.

Because...

Also, dont give a crap about people using HTP's for wealth. The boss is so easy. Without the current one year glitch (and DC dipshyts), we'd have much cheaper pendants for everyone.

/rage

...the problem isn't that people are benefiting from selling the HTPs they get from runs.
The problem is that the number of people able to even run is artificially limited.

They should have made all bosses instances way back during the original HT DC spree that managed to keep the price of skills like Genesis 30, Berserk 30, and Maple Warrior 20 ridiculously high for AGES.

The problem is that Nexon just does not give a single pomegranate about how such exploits affect their customers.
Worse, they try to profit from it!
Look at Item Locks! That's Nexon straight-up saying "Hey, we know there's a pretty damn good chance that your account is going to be compromised, but we can make sure they don't do too much damage... if you pay us."
That's quite literally the definition of extortion... and people are big enough saps to buy into it!

If I had the money, I'd throw a class-action lawsuit at their asses so fast.

Honestly, I'm surprised they having created three Cash Shop items that (1) make you invisible and (2) fight instanced versions of every boss.