Yes. They have been around a long time. The top level (blue) is good. It is on the better end of durability though honestly, I have not had the opportunity to compare it with LiNing top grade or Yonex top grade.
They are really nice shuttles, but expensive because it's hard to find a local price to buy. This is the price that was quoted to me: Snow Peak shuttlecocks price list for your reference, and his contact information (info@power-unleash.com) Superior Grade (C1101) 1-4 Tubes@USD$21.09 5-9 Tubes@USD$20.69 10-29 Tubes@USD$20.03 50 Tubes@USD$19.36 1st Grade (C1130) 1-4 Tubes@USD$19.36 5-9 Tubes@USD$19.10 10-29 Tubes@USD$18.44 50 Tubes@USD$18.04 2st Grade (C1136) 1-4 Tubes@USD$14.99 5-9 Tubes@USD$14.72 10-29 Tubes@USD$14.32 50 Tubes@USD$13.93 Shipping Fee Chart 1 Tube = 0.23KG 50 Tubes = 11.5KG 0 0.5 $18.70 0.6 1 $22.68 1.1 1.5 $29.71 1.6 2 $34.88 2.1 2.5 $40.05 2.6 3 $45.23 3.1 3.5 $50.40 3.6 4 $55.57 4.1 4.5 $60.74 4.6 5 $65.92 5.1 5.5 $70.42 5.6 6 $74.93 6.1 6.5 $79.44 6.6 7 $83.95 7.1 7.5 $88.46 7.6 8 $92.97 8.1 8.5 $97.48 8.6 9 $101.99 9.1 9.5 $106.50 9.6 10 $111.01 10.1 10.5 $115.52 10.6 11 $120.03 11.1 11.5 $124.54 I still have 3.5 tubes left and would not use them unless i know it's a HIGH level game. I use something cheaper 圣牌 (Holy Brand) made from China. Think it was H-104 or H-103