Coil mattresses have a huge range of prices and construction qualities. Generally speaking, you should pay between $500 and $1500 for an innerspring mattress, while you should expect hybrids to come in between $1,000 and $3,000. If you find a mattress cheaper than these ranges, you should consider the quality of its construction or materials before purchasing. If you find one more expensive, you should ensure you’re not being overcharged before you buy.