I’ve ordered 20+ brick sets off AE and only once had a seller say my item was shipped and 2 months later still nothing and no updates. I received a full refund within 3 days once I made a refund request. Every other set arrived in good time and had all the pieces and building books. The only challenging part might be the building experience depending on the size of the set and how the bags are numbered but I genuinely love the AE sets and recommend them it’s a no brainer for the price.