OK, I grant I coulda worded it better. Try this:
If you want to buy the insert for the specific HF gloves, you have to buy the initial box bracket.
And, if you want the trays that allow the double decker in a deep drawer, you buy the slides, then the trays.
Like I acknowledge, just being kinda dropped there might make me more prone to confusion. My viewing session was different than carefully adding things to the cart...
but, ... I think given lots of room on screen, maybe doing an indent
or some kinda double line (horizontal- or, vertical left side) to separate pieces that belong together, might help.
Graphically everything is implied to be a stand-alone.
When some are, some aren't.
I'm also thinking that might apply elsewhere in the site, to adding lifters to a cam to make a cam kit, for example.
I read that twice. I think it's clear.
* html/php are just references to common examples of the coding that formats the screen into sections. CSS is another. I know little about any of them, but allegedly anyone can tell AI what they want, or paste a link in where the effect you want is on display and AI will go into teh coding and copy the functionality.
