This year I purchased a house with an in ground pool. My wife & I are looking to install steps which would help the kids better. So I found a product I like and I noticed there were two of the same item. The materials are the same, installation is the same, weight requirements are the same, step width/length the same. The only difference is pricing. Above ground pool cost is $144 ... In ground price is $450. Can anyone please help me understand the exact same item can be priced differently.