Looks like a cool sofa

, but I think the USD1,500 is not for a whole sofa - from this paragraph on the website you linked to:
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| The modular system is made up of an ottoman, the basic unit, which can be matched with other central, corner and end units with high or low armrests. These elements form traditional sofas, chaise longue sofas, corner sofas and island elements a 360° seating solution. | |
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I would say that you don't get a whole sofa for your USD1,500...
Best to check with them what the one you want would cost first so you can see if the savings make it worth following up.