Introductions discussion

Hi there! I’m a 21-year-old guy and really keen on giving chastity a go. It feels incredibly thrilling to me for some reason. My girlfriend is wonderful, but this is one of the few things she would absolutely never do (I joke about asking her to try weird stuff in that way where you’re serious but make it sound light so she doesn’t notice immediately). I’ve been looking at photos of belts and really love how T-style ones look; they seem very attractive. My main issue is the price tag on most of them. I checked eBay and other sites offering sealed units for less, but I’m unsure about their quality or value.

So here’s my query: Are these types of belts worth buying? Any recommendations? I intend to wear it discreetly as much as possible (though not indefinitely since my girlfriend is involved), so I’ll work out a solution.