Unlike many, I don't update or A/B test anything after a product launch, so once a product is out launched, it's done from my perspective.
With some more effort, I could be growing, either by launching new products (last product launch was in February) or by starting up my ad campaigns again (I cancelled most of them in April to improve profitability at the cost of slower turnover).
I was let go about two weeks ago, if I can't find anything I love working on, I'll take this full time and (hopefully) go back to growing.
My partner and I have two related product assemblages that we think are under-represented on Amazon, but for which we think we've identified a reasonable demand.. and for which content/instruction/information are not consolidated/accessible.
I do offer two "FBA packs" for my own private labelled products but will not be restocking them when they sell out because of packaging challenges.
One big issue is discoverability. You will always be outranked by the sole product(s) as that's what people will search for. Customer acquisition costs are the major piece that many new sellers miss, and can easily sink an otherwise great listing.
That said, the great thing about selling on Amazon is the low barrier to entry. I would recommend you give it a shot and see if it works. Better yet, see if you can private label the product and have complete control over the packaging. (assuming branding is not an asset)
Seriously, send in 5-15 units and see what happens.
But really, just try it and Google every question you have.