Walmart offers Zeiss Pre-Moistened Lens Cleaning Wipes 400 Count for $5.61 (orig. $27).  Free shipping with Walmart+ or on orders over $35.

Product Description:
Zeiss provides an effective way to clean and preserve valuable optics. Whether used with camera lenses, eyeglasses, sunglasses, telescopes, or spotting scopes, these non-abrasive pre-moistened wipes are safe and effective. These ammonia-free wipes are appropriate for anti-reflective coatings and may also be used to clean laptop, GPS, tablet, or cell phone screens without leaving streaks. Designed for a single use, these wipes come in individual disposable packets.