Opinions please regarding a 5k purchase.

[vanlassie]

I’m ordering carpet from Lowe’s. Due to whatever reason they are giving out today… the carpet is back ordered. The exact statement is “They’re 60 days out.” I know this probably means “No idea how soon we can get it.” So I have determined it is going to get here when it gets here, even odds whether it’s this year or not. Here’s the issue. Lowe’s wants payment in FULL up front.
Does this sound in any way reasonable? I could pay it, of course. But since they are selling me something they can not say when I will GET… and my educated suspicion that I might never get it “Sorry, it was discontinued!” it seems completely unreasonable to me, and I’m balking.