Do you go to any events where that dress would be appropriate? Or do you love it enough to just wear it to dinner and be overdressed? It also depends on how much disposable income you have. Personally, it is too expensive for me, but if this dress is just pocket change then sure get it.
I have a similar dress with a tight corset top and a short skirt with lots of tulle underneath. I am neither tall or thin, but it looks amazing on because it has great definition around the waist and gives me an hourglass shape. So this style can work on more figures than just tall and thin, but it will need to fit perfectly.