I went to 3 different WalMarts today looking for the multifunction jumper starter FlashPilot found in this thread
YMMV - Walmart has the Everstart Multi-Function Jump Starter & Battery Charger for $9. Regular price $39.84
Boy, was I out of my element in WalMart! Bottom line was I couldn’t find any. More than anything I was curious as to how it was built, and $9 is cheap.
Even though I didn’t find the one I was looking for, I saw this. A Stanley branded version of the Black & Decker battery booster that HD cleared out at $20.
Anyway, after the third WalMart, less than a mile away was a Home Depot. So I stopped in. Here is what I found,
5 more of the ArmourMax 3D’s This package contains 3 Alkaline D cells also. The sticker says $14.06, but they rang up for $7.83 
Then there was this. A display with 20 of the Maglite Pro AA and AAA combos. I know the price says $19.06, but guess what? They rang up for $6.33.
Don’t give up on these items, they are still out there.