I think that give or take a year after launch you will be able to get 60 to 70 percent back of what you paid, within reasons I'd day, and if you're lucky, a little more. I keep my equipment in great shape, and was able to get some money back for my used equipment, more for others. My hardest sell was my P1 pads, no one wanted those damn pads, I hated them myself. After trying to sell them for maybe a year I had a newb buy them, sadly for him they were no good either in the end and I found them back on kijiji, poor guy. My 11K skates were a tough sell, and even my Vapor 2x skates, took some time.
Used sticks are a hard sell as well, you will be lucky to get back 50% I find, but was able to sell my used P2 and EF4 sticks.
It all depends on the market and what they are looking for, I was called names for asking too much money, just because some guys live on the internet to make fun of people selling, maybe because they are jealous they can't afford things? Not sure. A guy was hunting me for a few years, sending me marketing websites on selling lol in the end I did pretty good though, just know that some stuff will take time to sell, not everyone wants it. Just the sad reality.
In the end of it all over the years I was able to sell, 2 sets, 2 skates, 2 chesties, knee guards, 6 sticks, some new and some used, Bauer 960 xpm helmet.