It depends how old your kids are and how much disposable income you have. Young kids will trash any sofa, expensive or not. Ask me how I know
Also keep in mind that there's no such thing as a classic sofa that will never go out of style. Those sofas from the early 2000's with the curved arms etc. don't look modern anymore. The more modern styles popular today won't look new and fresh in 10 years. $3,700 doesn't seem exorbitant to me, but just go into it with the understanding that no sofa will be in vogue forever.