No, I wouldn't personally. If you could get it 2 months ago, then yes, but by then I don't think it will be a good deal. You can look at the mining calculators (e.g.
http://www.bitcoinx.com/profit/) to calculate the odds. It looks like a lot more ASICs will be available then that are better than current generation ASICs.
If the price of one BTC is $130, and this costs $1300, then you'd need to make 10 BTC to break-even (excluding electricity). So it depends on the difficultly then, and the increases coming as to whether you would ever break-even on it. The problem is that you are talking two months out and there are no guarantees on delivery, and it is a crapshoot as to what other ASICs will be shipping by then.
It is just very uncertain, so whatever you do, be careful.
edit: There was a thread somewhere on here that compared various ASIC miners and relative costs, but I couldn't find it or I'd link to it for you.
Hello guys,
I want to invest in a rig, about 1.3k$, but a friend talked to me and told me that a big batch of BFL machines would go in December. More miners, more difficulty, less bitcoins for us all.
If you could get a 25 GH/s for the price above in late October/early November, would you do it?
I need opinions and help, we cannot do this kind of investments everyday :s
Thanks,
Hugo