If you want a flap, the E/W or mini sized flap are under 2k.
The gold python flap from what I think is the Soft & Chain collection recently went on sale for about $1,400 (60% or so off retail). I can't remember if this was at NM or Nordstrom, but details are in the Chanel shopping subforum.
I got my vintage XL lambskin flap with gold hardware for just above 1k off of eBay, in excellent condition as well.
^^It's a littel on the small side. Its should fit wallet, cellphone/Blackberry, keyholder and maybe a few cosmetics at most. For $2000, I'd go with PST or GST. Good luck w/ your decision.