Generally, when I go into the sporting goods store, I look around at everything mechanical that may need maintenance, and I get the sense that whatever I chose, after the season is over, the company will discontinue the model, and spare parts will be unobtainable, and I wouldn't find a shop with the tools or knowledge anyhow.
Shoe repair is hit-or-miss. I contacted one who said it would be a 2 month turnaround time.
I purchased an item from a church supply and noticed that it included a molded plastic insert that I'd be removing to clean once in a while. So I contacted the vendor and asked whether I could purchase some spare inserts. "well, our supply chains are challenged right now, and this is made in Italy..."
I advise my friends, if they're purchasing any electronics, like a notebook, you may as well bundle some accessories and spare parts right away, like an extra battery or power supply or the component that's most likely to go bad, because in 5 years when you need it, they'll be sold out.
In fact, in all of those markets I've listed above, I've purchased something, unbox it at home, only to find out that it is lacking accessories, isn't a complete set, or part of it is unfit for purpose, and in fact the manufacturer just gets things onto store shelves while incomplete, so they can sell you more things out of their catalog [iPhones without chargers; shipping beta software...]
I just finished carefully cleaning the sponge filter on my vacuum cleaner. One day I'll visit their website to see if there are any spare accessories still available for it. Good luck!