You've got to at least take into account
- the Christmas promotions and discounts - the 7D and 5D (in a kit or seperate) were some of the lowest prices they've been.
- there's going to likely/potentially be an announcement soon that'll affect 5D and 7D purchases.
The day to day prices do fluctuate if you watch them, as promotions rotate - eg I've seen the 7D drop before Christmas for some, some were offering the same price with a bag thrown in, then more dropped in the Christmas run up, then after January the price rose up the equivalent of $100-200 odd here and there -and now the 7D and 5D seem to be fairly stably equal if not a bit higher to pre-Christmas discount prices.
Maybe B&H has just left the price increase longer than in the UK?
Another angle might be - if they stealth increase the price now, they can then justify a "10% OFF DISCOUNT" promo /haggling room when the new camera gets announced...