Hi Karanam, thank you for sharing your feedback.
The rain cover is primarily designed to protect the bag and its contents from rain and dust. Since it uses lightweight waterproof fabric, it is not intended to withstand sharp objects, abrasion, or rough use, and may get damaged over time depending on usage conditions.
Regarding replacements — these are made-to-order on priority, as the rain covers are produced along with the bags themselves. When a replacement is requested, it involves fresh material and production effort, which is why there is a cost associated with it.
— Team ViaTerra