Rina Looking at the Fancy Steel Slim Fit sissy belt, it's $929. You can buy exactly the same thing from eBay, DHgate etc for less than $100 (with attachments!).
I have the female version, it's not perfect but it serves my needs at the current time. It's comfortable enough for everyday wear and I have $800 left to indulge myself with. Sure, I'd love to try a My-Steel one day but the exchange rate just kills me. AU$3000 on a chastity belt? I'll pass thanks!
Also, I'm quite active and I really don't think a solid belt is suitable for my lifestyle. At least I can still live a relatively normal life whilst locked in a cable belt... most movement is okay (sitting, standing, driving etc) and I don't have to make any special allowances for the clothes I wear.
Granted, I can't use thigh bands properly with this one, but it's relatively easy (and cheap) to switch to a solid waistband.
A lot of people will write off the cheap belts, but I think at your stage it would be beneficial for you to save some money until you figure out what works best for you.