Things I wish I checked before buying diabetes technology

I have been looking into buying diabetes technology and realized the price is only one part of the decision.

Before spending a large amount of money, I want to understand what support is available if something goes wrong. Things like warranty coverage, replacement policies, insurance options, and any financial assistance programs seem important but are not always easy to compare.

For people who have purchased pumps, CGMs, or related devices, what did you check before buying? Were there any support details that made a big difference later?