Pros: Lower price
Cons:
1) Does not 100% guarantee authenticity. If you go to a 3rd party authenticator, then it is probably okay.
2) Pre-loved gold will have shown previous wear and tear (if that matters to you) But that is not only external but also
internal. You do not know how often the previous person has taken off and put on the bracelet. That may lead to the screws getting a little worn down which may affect the security of the closure mechanism over time as you wear it.
3) After wearing the pre-loved bracelet over time, what if there are any flaws, quality issues, or damages? What are you going to do? If you bought it in store, you have the ability to bring it back to the store for evaluation, repair, exchange, and/or return because on record, they know that you bought and own the piece. (I'm not saying they won't do it if you bought it pre-loved, but it may get a little tricky, and may depend on the store and the SA.)
Having a box or not is up to you. I think what matters more (to most people) is that certificate of authenticity. In general though, most people prefer a complete set (box, screwdriver, certificate of authenticity).
"I don't plan on reselling" is something I've told myself for some bags and RTW. And then as time passes by, I change and I do eventually sell them. Not saying you will change your mind, but never say never!

Even the most steadfast of us surprise ourselves years down the line on what we say to ourselves, vs what we eventually do!
I personally don't care too much about customer service. They don't have to wine and dine me (especially since I'm not a frequent buyer). But they just need to be polite, professional and respectful. It's not like my SA is my best friend. She is professional and that's good enough for me.
If I had to chose between buying a bag vs fine jewelry pre-loved. I'd go for a pre-loved bag over pre-loved fine jewelry any day. I like to buy my jewelry brand new and have the wear and tear be done by me, and me alone.
I am very aware that the Love bracelet is expensive and the price is only going to go up. It's not an easy decision to make and if you don't feel comfortable buying it full priced, it's still a lot of money to buy it pre-loved. You need to think about how much you love the bracelet and how worth it is to you. Good luck and happy shopping!
