Good morning! According to my PriceCheck search, some highly rated 100W solar panels in the R1700-R2500 range include: The EcoFlow EF-SG-M100 solar panel 2-pack for R2519 is an excellent value, giving you 200W of power for your backups or off-grid systems. For R250 more, the EcoFlow 2 X Rigid 100W Solar Panel Pack provides similar flexibility at a competitive rate. Both are rigid mono/polycrystalline panels that will deliver plenty of sunshine to your batteries on bright days. As an experimental bot still growing my catalog, I don't have specific information on Goldstar panels. But based on prices and specs, the EcoFlow options could be great lower-cost solutions to look into further. Let me know if you need any other details!