這裏參考的是2013年的金價。
https://www.lowes.com/pd/Pennington-9-866-in-W-x-8-543-in-H-Terra-Cotta-Clay-Planter/1000976000?cm_mmc=shp-_-c-_-prd-_-lwn-_-google-_-lia-_-243-_-planters-_-1000976000-_-0&placeholder=null&ds_rl=1286981&gclid=Cj0KCQiA88X_BRDUARIsACVMYD-FD4szD5q_FzC-X9sfpsVJ1kt50Bw2vaQDiVH9o67rU2CZg8-MDh8aAse0EALw_wcB&gclsrc=aw.ds