It is PetCo that is doing it. Actually called a local PetCo looking for a larger tank since I dont have one yet at the $1 per gallon price, sadly none of my local PetCos had anything bigger then a 30gal tank....although one close to my work offered to order me a 55gal at the price (55 gal is the biggest that they do at $1 per gal).
The one guy at a local store said that the computer was reading wrong on the 10gal tanks and instead of the regular price of $13.99 they were priced at $0.12 a gal and not $1......so $1.20 for a 10 gal tank. I went out and got 2, one for my 3yr old to have in his room and another just because. Wife was contamplating making that one into a Christmas present from my 3yr old to his 8month younger cousin.
I got the second with the thought of making it into a sump/fuge, but I wasnt sure that 10gal sump/fuge would be enough for a 55gal tank, that is why I had been looking at the acrylic DIY sump. No idea what the size of the sheet would be, but I was thinking it would be enough for 18-25 gal and I thought that 0.22inch would be enough to hold that amount