I haven't read through all the posts here but I think I have a different view of the factory floor mat than most; I've never liked them much. I'm specifically referencing 1978 era 40s as that's what I have. I haven't spent any real time with a '79 and later 40 in 20+ years. It's been longer than that with the early stuff.
While it's obviously been years since I saw new one and mine is not in pristine shape (one small tear and a missing snap) I am less than impressed with the design. I think the tread pattern is silly and the coverage poor. I have no interest in another copy at any price.
What I would be willing to pay, say, a buck and a half for - maybe two - is a decently textured, easy to clean, easy to remove and clean underneath rubber mat that covers well under the seats and around the jack mounting points and perhaps folds up and over the gas tank cover ('78 and earlier). I don't care about a Toyota logo or some silly "Cruisers R Rad" embossed design. I say this as someone who restored their 40 more than fifteen years ago with many more factory parts than are available to restorers today. There. I said it. I'm wearing asbestos so feel free to flame.