Upload & Sell: Off
For the same price as "lots of cards" there are better options, including cheap/used laptops or netbooks, or ipads, or photo storage devices. So if he's spending money anyway, I wouldn't buy more cards.
I would not trust a cheap used laptop/netbook for all my photos. But if you do that, then you have to compare with cheap used memory cards also. And used small sized memory cards can be bought for nearly nothing today