Keys are also on sale: https://www.amazon.com/10-Treasure-Hunter-Keys-RuneScape/dp/B008BKF498/ref=sr_1_1_twi_sof_2?ie=UTF8&qid=1480112549&sr=8-1&keywords=runescape&th=1
https://www.amazon.com/25-Treasure-Hunter-Keys-RuneScape/dp/B008BKF498/ref=sr_1_1_twi_sof_4?ie=UTF8&qid=1480112629&sr=8-1&keywords=runescape