Yes, amending orders is a major pain in ETrade. Unless you buy at market to get the whole order through in one go, you get left with part of your order unsold, then you can't amend it. ETrade won't let you change the price of the trade.
If you're left with these shares, you have to cancel the order and sell the leftovers (paying another minimum $33 brokrage)
ETrade must make a fair bit in extra brokerage from all these quirks, because to have this kind of inflexibility as part of its supposedly better offering sucks.
One other gripe is the amount of time for the 'handsfree' refreshes to update watchlist price displays. The horizontal progress bar is pretty annoying because of its slowness.