This is the price for a set of four. They are made of plastic. There may be some black marks on the back that can be removed by wiping them well. I will wrap them in bubble wrap, but please understand that damage during shipping is possible. If you purchase multiple items, I will discount 100 yen for each additional item. #aquarium #terrarium #diorama #moss #succulents #succulentplants #pottedplants #foliageplants #decoration #cactus #mixedplanting #miniaturegarden #miniature #ornament #interior #retro #cute #handmade #mixedplanting