Which variety is it? Are you planting it in a greenhouse or outside - if it's outside it will fill with water and then you have the potential for rot - if it's inside you can probably keep water out of it .
If it was a real bargain and it's the best that they've got, and you don't mind that it's a lopsided plant and you're willing to take a risk then you can choose to go for it
Or would you rather spend a bit more on the right plant - only you can make that decision.
As a comparison, last year I paid about £15 for a well-grown Brown Turkey fig tree - nearly 3ft tall and the same across with half a dozen good branches and already bearing some figs.