there are 2 banana cards a regular and a lux, the lux gets you rewards quicker.... But its still on in store purchases, and not quite worthwhile IMHO.
Also, if you have a reward for $10, and but 2 items one for $40, and one for $60 they calculate the reward @ $4 for this one, $6 for that.
The reason if you return the item, you lose the reward
pretty sucky.