Looking to replace my old fridge. Came across the Samsung RF217ABRS (19.8 cu ft) on sale for $1000, normally for $1049. But the interesting thing is the lower capacity model like RF197ABRS (17.8 cu ft) sells for $1500 and RF195ABRS (17.8 cu ft) for $1300. This does not make sense to me.

Also what is the difference between the two 18 cu ft models? Thanks.