This is my biggest quandary. May try your start out used and go from there
So I'm not going to make any judgements about you and your situation as I don't know you, but I do have some observations over time in terms of women and "gifts"
Something I've learned is that large scale gifts need to be earned. Let me give you an example. So for a when my godson was a teenager, he got into martial arts. Which was nice because it was something we could do together. I made it a point to try to raise him within the scope of having activities that operated as teaching points but also a way to better bond. Well for Xmas one year, he wanted a pair of Winning gloves. His reasoning was that even though they were expensive, they were well designed and would protect his hands better for longevity and health. ( To this credit, at least he listened enough over time to try to sell me on a practical reason for trying to get a free vanity item)
In many ways I spoiled the kid when he was very young. Probably to make up for the loss of his parents. And probably because I did work so much. But also was responsible for showing him that the lifestyle he was living was no free and nearly all other kids his age didn't get the same kind of opportunities he did.
I asked him how much has he been invested in his training? Do I see him shadowboxing everyday? Do I see him on the speed ladder everyday? Do I see him doing drills on the mat everyday? I didn't expect to raise a kid on my own. I had to figure some of this out the hard way. I couldn't give him the impression that I would just start handing him stuff because I had the means to hand him stuff.
I told him if he wanted those gloves, he had to show me commitment and passion for a year. Get your butt up at 4am, budget your time and show your investment. I pointed out there were lots of poor kids who had to work part time jobs in high school to help their parents with the bills and would have to train with cinderblocks or make a heavy bag out of rags and duct tape. Show me your investment and I'll show you my investment.
In the Peloton thread, it appears some guys here, based on implication, are buying their wives those bikes and those subscriptions so their spouses can finally get into shape. I'm more of a mindset in that some kind of gift of that nature, a larger scale one relatively, is one where it should be earned. As a reward for established commitment.
In my mind, hand your wife a kettlebell first. I don't know you or your situation, or her health or her general fitness or her commitment to exercise. But I would have her prove to you she's earned an elliptical as a gift. Doing otherwise, as some guys in the Peloton thread seem to be leaning, IMHO, is a pathway to long term disharmony and discontent. People who get big things without earning them end up wanting bigger things once they get bored of the old shiny formerly new toy. One day, the husband becomes the old formerly shiny new toy.
In my mind, a health marriage is when a woman is seething half the time in rage at you, but is silent and submissive anyway because she knows if she screws it up, there will be 100 other women waiting in line to replace her. To me, an effective marriage dynamic, in so much as is possible, is when the wife understands she outkicked her coverage. That she somehow lucked out to marry a guy with so much going for him that he could have picked anyone, and anyone with far more to offer than her. It's on the guy to build his life in an exceptional manner so that he can get to that point of leverage. I don't believe in "happy marriages" I believe you can have some semblance of order in a dynamic where two people are negotiating some practical trade offs for things they want. I rarely seem modern American men in a functional marriage, when I do, it's because there are some absolute leverage points in place. Respect matters more than love. Lust means more than communication. Leverage means more than compromise.
One of the absolute hardest things I had to endure in my life was learning to tell my godson the word "No" In so much because I know he lived for a long time in fear that I was much older and might die and then he'd be abandoned again. And to negotiate past my own past where I was abandoned. But I had to do what was right (i.e. reinforce that things are earned in this life) over what was comfortable.
You are a Captain of a ship. There are no passengers on your vessel, only crew. If she wants to be First Mate, she needs to learn how to mop the deck first and clean the galley and stand watch at 2am.
That's my take on it. Good luck.