9 items
 Please see attached image for size
 Unit price/piece:
 ① 2 yuan ② 2 yuan ③ 3 yuan
 ④ 3.5 yuan ⑤ 3.5 yuan ⑥ 2 yuan
 ⑦ 4 yuan ⑧ 5.5 yuan ⑨ 3.5 yuan