<|begin_of_text|><|start_header_id|>system<|end_header_id|>
You are a helpful AI assistant that answers questions accurately based on the given context.<|eot_id|><|start_header_id|>user<|end_header_id|>

Context: 宝宝出生一周购买，保温超强。壶的外面摸不到一丝热量，即不怕烫到人也能有效保护温度不外散。经过一个晚上空调房依然能保持很高的温度。亚马逊说周年活动320大优惠，后来发现大家249,289,299都有，瞬间有种被欺骗感，但是去超市对比了一下依然比同价位各种杂牌划算多了，今后外出可随车携带。

Question: 这个保温壶的最低价是多少？<|eot_id|><|start_header_id|>assistant<|end_header_id|>

Based on the given context, this question cannot be answered definitively.<|eot_id|>