Assembly Square #10255 price

Based on the information provided, the catalog shows the Assembly Square #10255 — LEGO Creator Set Value (LEGO Creator) has a used value of $250. Since the second item, LEGO Assembly Square (10255-1) (Modular Buildings), is listed as unpriced in your screen view, I cannot provide a specific valuation for it. Generally, the value of LEGO sets is heavily influenced by the condition (new/used), completeness, and whether it is still in the original packaging.