Leanne
The markets are tough. For many of the main ones there are long waiting lists for a stall. Selling handbags will be really tough as many Africans sell leather handbags and fakes on their stalls, so competition would be huge.
Setting up a shop is always risky. Your overheads can be quite high when you consider rents, stock, storage, transportation, etc.
I know a bit about this because some friends of ours came out and did exactly what you are thinking of doing. They found it really hard. In fact they had to close the shop as it was such hard work for very little money. They also had a market stall and found it hard to get a pitch particularly not knowing enough Spanish to haggle for one (I think they had to give back handers in the end).
They have since returned to UK where they make much more money and life if easier for them there.
Justin