LensPen NLP-1CUP UltraPro Lens Cleaner for $7

The LensPen NLP-1CUP UltraPro Lens Cleaner is currently on sale for $7 at Amazon by Amazon itself. Despite the single-figures price, this is not an Add-ON item, so if you are a Prime member, you can buy one of these and still get free 2-day shipping. Limit up to ten units per customer. It averages 4.4 out of 5 based on 140+ customer reviews.