Then you haven't been watching prices as of late - especially SSD prices after Thanksgiving.
128GB and larger SSDs are now under $1.00/GB (either online or retail) - a price unheard-of before then.
512GB SSDs are appearing in the non-enterprise space for the first time.
16GB thumb drives (pretty much invariably supporting USB 3.0) are under $10USD.
I don't exactly live in a hotbed of low prices (if anything, greater Washington, DC is known for being a hotbed of bureaucracy and shopping on the taxpayer dime) - and I see such pricing on a daily basis.