Review (3/5): Major price hike, small quantity.
The listing is for 3 sheets of 18 graduated sizes of stickers attached to a central strip, so 6 stickers of any given size. The "54 strips" refers to the quantity of individual stickers, not the quantity of sheets. At $13 USD, that's $4.33 per sheet and $0.24 per sticker. Since most people don't have 9 different sizes of nail beds on every finger, you'll go thru the ones that fit pretty quickly and have to either trim down or throw out the ones that don't fit.
In Sep 2018 I ordered a pack of 40 sheets (720 stickers) from Dashing Diva for $25. That breaks down to roughly $0.62 per strip of 18 and $0.03 per individual sticker. They worked well and I felt happy with the results. Although they've tweaked the product in the last couple years and the stickers are now a thicker material, and 2021 is a different world in terms of supply chain costs, I'm not convinced a ~587% price increase in less than 3 years is justified by slightly thicker material.
Although these strips are effective at protecting your natural nail and easy to use, the value for money is not great in my opinion. Unless the price comes back down I can't see myself ordering these again, and will have to find more cost effective ways to keep my nails healthy.