On average, I've found that a brand new set of acrylic ... nails. In addition to the kit, I bought the necessary products for extensions: full-coverage tips (any brand will do), Beetles Nail Glue ...

You simply squeeze the Glue Off (another product in the line that's sold separately) along your cuticle, wait a minute, then use the chisel tip to lightly lift the fake nail. This was easy ...