No, there are multiple reasons why:
1) It's BFL, search the forums. They have been delaying their schedule continuously and many even question if there is a real product.
2) Increasing network difficulty, check out this link:
https://en.bitcoin.it/wiki/Mining#The_Difficulty_Metric3) Place in Pre-Order List: There are tons of folks who have orders 6-10 months ago for ASIC hardware, be prepared to wait months.
If you're interested in the concept and don't mind waiting awhile, go ahead. With how the mining landscape is changing, expect that you will not break even if you buy hardware now (unless you're going large scale).
Hope this helps