Merchanting Frost Bones is pretty much not worthwhile, too. I've seen too many people buying off GE for whatever price and selling them in bulk for 14k each.
My friend has been complaining about Frost Dragon Bone dropping in price nearly every day. Is the bot situation at Frost Dragons this bad? Hadn't Jagex taken action yet? I've also heard complains of too many merchants trying to make a profit off Frosts by buying them off the GE.
Merching Frost Bones is certainly dead. The demand for them are gone, and it's mainly merchants buying off each other for profit. That's aside from the bot situation, which further causes the price to crash.