Sunlu drying box - is it really useful?

SUNLU Filament Dryer S4 vs S2 vs Food Dehydrator

SUNLU Filament Dryer Box S1 Storage Keeping Material Dry During 3D Printing LCD Screen 3D Printer Parts Filament Dryer Box - AliExpress

[2023 Newest Upgraded] SUNLU Filament Dryer Box S1 Plus for 3D Printer Filament, Built-In Fan, Dehydrator of FilaDryer, Dryer Box S1 for PLA PETG ABS

Upgraded Dryer Box of 3D Printer Filament, SUNLU 3D Filament Dryer Box S1, LA Filament 1.75 mm Dimensional Accuracy +/- 0.02 mm, 1 KG Spool, PLA Grass Green : Industrial & Scientific

SUNLU UV Resin Curing Light Box for SLA 3D Printing

SUNLU S2 Filament Dryer Box Storage Saving Arid Material Machine Storage Holder Filadryer S2 Dryer 3D Printer Tools Accessories

Sunlu Filadryer S1 Review - Filament Dryer - Make 'N' Print

Is it worth getting the $70 one? Or should I pay more for the $95 one? : r/3Dprinting

Is buying one of these filament dry boxes worth it or not? What is your experience? : r/3Dprinting