Retics, typically, aren't the tempermental snakes, they used to be.
You get a captive bred specimen and of course, you'll get the pissy temperment, at first...but with handling, Retics calm down and are some of the best behaved snakes you'll find. Temperments that rank right up there with puppy dog tame Burms.
My Genetic Stripe is new(er). I haven't had as much time, as I usually do, to devote to a new arrival and get them used to being handled.
Every other Retic I own (minus a het albino Tiger) is puppy dog and doesn't even hiss, let alone strike or bite.
Now, to the gentleman, who asked about size and pricing...
Super Dwarf males will max out around 6', while females can hit 8', but rarely bigger than that. Dwarf males will hit 10' - 12', while it's not uncommon for a female Jampea (dwarf) to max out at around 14'.
Pricing really depends on genetics, whether it's het and what it's het for. My Super Dwarf male is 100% het albino and possible het Axanthic (a gene that has never been captive proven). He retails for upwards of $4,000. If my Retic guy proves out the Axanthic gene, they'll be $25,000+ snakes...so, fingers crossed. lol
You can pick up a really nice normal, Super Dwarf, for around $400, these days. Hets will obviously run you a little more and once you get into Dwarf albinos, you're looking at upwards of $1,500 - $2,000...more for Super Dwarf albinos.