The error regarding the $100 rebate for the NEC MS95 has since been removed. The $100 rebate presumably was only meant for the NEC FE950 and the NEC FE700. And although there is a listed $100 rebate for a NEC FE950+, that also appears to be a typo as a search does not find that "plus" monitor at Staples. The $100 rebate appeared in the Staples weekly Sunday (Feb 4th) newspaper insert advertisement in Los Angeles, and assuming it was a national ad, the rebate is effective nationally at your local B&M until Saturday, Feb, 10. A $50 rebate for the NEC 950 is effective until April Fool's Day.
The online rebate form states that this "Offer not valid with any other rebates, offers or promotions." This suggests that any of the various $30 and $40 off coupons may not applied -- if they want to be strict about it.
In my case, I showed the clerk an instore copy of their ad and also asked them to apply a $30 coupon number (which I can reuse until it expires May 15). They asked where I got the coupon number and I replied on the back of a catalog just like this, as I held up one of their instore catalogs. They couldn't find the $100 rebate form and so credited me the $130 on the spot before calculating the sales tax.
Now I can't imagine going back to a 17" monitor just as I imagine that as soon as I get broadband, I'll wonder why didn't I do this before?!