I haven’t jumped on you.
The thing with skill toys is that most people don’t play with skill toys, or at least don’t get serious about them. Even many who have in the past played with yoyos, they don’t fully understand them. Yoyos have evolved a LOT over the past, well, I don’t know, but I got my first one in 1977, had it taken away due the broken string, then got back into it for real in early 2011, so the changes have been tremendous from my perspective.
As a parent who throws, I am “into it” so I understand. Your parents are not. To them:
They are just spinning objects. They might be plastic, they might be metal, they might be wood, or some combination. Other than that, aside from decorations to them, a yoyo is a yoyo is a yoyo.
Let’s talk whiny unappreciative kids for a second:
I got 4 kids. 3 girls, 1 boy. The boy is into yoyos and I take him with me to skill toy meets and he helps me at CalStates and BAC running sound(and goofing around with yoyos) and he went with me to Nationals.
Let’s take BAC for an example: My wife felt “guilty” and bought the girls over $100 worth of toys while I was at BAC with my son. Before I got back from BAC(and I said don’t buy so much in toys for the girls), ALL the toys were destroyed. I got Richard a GoBig at BAC. It’s still working. His Fiesta XX I got him at BAC 2012 is in kinda sad shape, but in that case, he’s played the heck out of it, so in this case, I can even justify saying he wore it out. My house is full of toys being destroyed. My kids are even attempting to destroy my stuff and my wife’s stuff, furniture and darn near anything else they can get their hands on. I say no, they, through their actions, say effectively (something not suitable for reproducing on a family-friendly forum) to me. There is a box of small rubber band hair ties my wife got, which have now become some sort of daily task of strewing these all over the house. I could rant and rave about whiny, unappreciative kids for days.
My wife spoils them, but I’m the one who deals with the fall-out. My wife isn’t concerned with how things impact me. My kids’ unacceptable behavior is DEFENDED, and it’s as if they poop gold, their flatulence smells like roses and they are “perfect in every way” so it seems. I guess my wife hasn’t seen me have to quite literally almost kill myself tripping on toys to break up a 4-way “little kid brawl” while trying to instruct a client how to navigate the console port on a Cisco router. Then having to do the same thing not even 30 seconds later. I’ve literally done so much yelling the past few days, my voice is shot, I can’t talk on the phone, and I feel like a Marine drill sergeant doesn’t have squat on me when it comes to volume and quantity.
Sorry, took a dark turn there.
Really, they don’t get it. That’s OK, they aren’t going to either, so don’t bother trying. The best you can do is explain things to them and hope they can grasp some of the concepts. At the same time, honestly, this is a toy and a luxury item and unless you’re competing, it’s hard to argue a “need”, when it’s only going to be perceived as a “want”. Educating them on the topic will help them understand the mechanics of things. After that, I can’t say what they will or won’t be able to take into consideration.
Also, keep in mind, holidays are coming up. Sales are coming up. Even YYE has sales on Black Friday or is it Cyber Monday, but they do something. Maybe right NOW is not the time to buy. Maybe it’s within your best interest to hold off. Maybe gift ideas are being gathered.
Do this: Spend the time doing research. In the meantime, just enjoy what you have, which is what you’ve been doing.
I have neither, with is good…and bad, depending on what day it is. 
Today, I am fortunate that my purchases are private, and no one knows everything I buy…but me. I only got a dose of what it was like to have my spending exposed, when I went through the homebuying process and my bank statements were being combed through by a mortgage broker. I was asked out of curiosity what is “YoyoExpert?” 
However, wasn’t looking for the nickel. Point of interest, though: the nickel being sold here is soda blasted. Yours is probably the same unless it was a special edition.
I wish I knew he was going to ask for those bank statements more in advance. I would have tried to look good for three months. He saw every little charge legit. I should carry cash on me more often, but I don’t. So my debit card purchases captured every little thing. Dunkin Donuts, McDonalds, every $2 purchase was on there. I was thinking…wow, when he asked about YoyoExpert. I just told him that I collect toys, and he understood after that…or not.