They looked to be stockpiling 10s on the shelf last time I was at petco about a week ago. Like, turned so they could get more of them on the shelves than normal. I already got my 40 breeder, but I could use a 10gal or two.
The 20L are part of every sale, the 2.5 and the 5g are not part of the sale for obvious reasons. What do you mean by "sucky" tank? The 40breeder is a great tank, so is the 55 and the 10 is sold everywhere. You not liking them or not been able to afford one, does not make them "sucky".
Keep in mind not everyone is as bright as us or addicted to this hobby enough to be as pumped up to hear $1 a gallon sale. We sound like a bunch of teens getting an awesome deal on Justin beiber tickets... But yeah I'm getting one or two