A better way to compare long-term value
The lowest price and the best value are different questions. Compare the practical costs you can actually establish.
Start with the complete cost
Add the purchase price, shipping, required accessories, and any clearly stated recurring charges. Keep unknown costs marked as unknown. An attractive introductory price is not enough information if an essential charger or service costs extra. Compare products using the same assumptions.
Look at support before you need it
Find the support address, warranty terms, and troubleshooting instructions before buying. Check whether those documents identify your model. A polished photograph cannot tell you how easy a product will be to maintain, and an unsupported claim of durability is not a substitute for written terms.
Choose for your actual routine
Ask whether the cleaning, charging, and storage requirements fit your life. A technically impressive product can still be a poor fit if its care routine is impractical for you. Keep your comparison to a few documented differences and write down why each one matters. That makes the final decision easier to revisit.