I see no problem with it. Difficulty increased right about twice since they were first announced, so the new buyers are in the same situation now. Also, with current price of 3 BTC/GH (+shipping) they are still not profitable and serve mainly as souvenirs.
I think the Block Erupter is able to generate some profit, otherwise I would not had dispatched 347 units in less than a month. Many buyer have already indicated the product is offering what they expected in terms of profits.
In the moment all the 347 units with ~336MHz each is generating ~3.03195414 BTC per day.
The lower price will put the first buyers in disadvantage because that will induce people to obtain more and more devices, which at the same time that will increase more and more the difficulty. This will result in a wider period of time to the first buyers at least break even to compensate the price paid for each unit.
So let's compare! The first buyers paid 1.99 BTC per each ~336MHz. That means 0.00592261 per MHz. Now the new buyers will only pay 0.00296130 per MHz.
First buyers in the moment would break even their MHz cost in ~16 hours while the new buyers would break even their MHz cost in just ~8 hours!
This is really bad news for the first buyers!