That stupid $1 more is what got me the first time. $20 for 1,000 crickets or $9.16 for 1,000 flies. The math is easy on that one. Probably an inside joke at the sellers. Every business has a gimmick for suckers.
In all seriousness, when it comes to a 2-4 month old panther, it REALLY pays off. Their colors go off the chart when hunting them, and being soft bodied, they are digested ubber quickly. Very fast growth spurt follows. I can't believe I waited so long to take full advantage of them. The only other feeders are that eaten that fast, are mantids and moths.