Yea, F them for not giving you the new customer 90% off promotion! Greedy bastards. (They have this to get new customers, you have already come and gone and most likely won't stick around to the point of profitability.)
I'm editing to add that I'm looking for a way to move my gallery (10+ gigs of photos) over to slicehost with a mounted "S3 volume" I'm not sure of the performance hits, but I'm willing to bet I'll get a faster site out of it.
For what you're paying, it's actually a fine value. It's only for toy sites and such, but it's good to have a place for toy sites.