The Bill Monroe recording is quite different:

The Coupon Song (ca. 1946)
Bill Monroe and the Monroe Brothers

At a new cigar store, they're giving away
Hundreds of thousands of coupons each day
Things good for nothing you can bet your life:
I tried it out and I got a wife.

You can shut up a jack knife, I've oft heard it said
I'm sorry that I didn't get a jackknife instead
Five million coupons is what my wife cost
I'd give many more now to get a divorce.

I'm saving up coupons to get one of those.
Of coupon-redeeming I'll die I suppose
A cute little casket the catalog shows
I'm saving up coupons to get one of those.

My brother got married and right off the reel
Started saving up coupons to get a new automobile
But the day that he got it, from smokin' he died
From the house to the graveyard was brother's only ride.

His wife then got busy, no time did she lose
Till some lucky boob stepped in poor brother's shoes
And now each evening they both may be seen
Riding around in poor brother's machine.

I'm saving up coupons to get one of those.
And when I die my wife will marry and riding she'll go
And while she is in it, I hope it explodes
I'm saving up coupons to get one of those.

We've been married a year in a cute little flat
And all that we have is a dog and a cat
But the lady next door is chuck full of joy
The stork came and left her a cute baby boy.

I'm saving up coupons to get one of those.
My wife's been making some cute baby clothes
I don't know who told her but somehow she knows
I'm saving up coupons to get one of those.

[Yodel]

source: http://www.poliscijobrumors.com/topic.php?id=20932&page=3
Corrections added after listening to recording.

---

Oh, and if you're in a coupon mood, here's Saving Up Coupons for Mother. Anybody want to transcribe it?