I think you are right, I bought a few more $1 calls, and averaged my cost down:
CLSN FEB 2013 1.0000 CALL Last [Tick] 0.25[+] Change Down -0.1 % Change Down-28.57% Bid 0.2 Bid Size 1955 Ask 0.25 Ask Size 19 Open 0.3 Volume 981 Day High 0.3 Day Low 0.15 Previous Close 0.35 Prev. Close Date 02/01/2013
With this nasty market sell off today, and a bounce up already it looks like it was a good buy at the bottom when you grabbed yours!! Did you get any 15s or the 20s?