As Nicotinamide Riboside became popular, demand and price increased recently. Вот 2 options to reduce costs:

• Resveracel w. Никотинамид Riboside 60 caps x 150mg – 39Usd
  Also contains Quercetin Phytosome, Trans-Resveratrol, Betaine Anhydrous (Trimethyglycine) to increase effects.
  Reduce total costs by not buying all items separately.
• Никотинамид Riboside 60 caps x 250mg – 80Usd
  Reduce costs by purchasing big quantity.