The easiest way to buy reliable and high quality carbon offsets for individuals is to purchase directly from registries like the Gold Standard. Another interesting platform you can buy directly from is Puro.Earth, which is only selling carbon offsets generated by actual carbon removals.
Companies that are looking to purchase wholesale or building up carbon offset stock to hedge against future price risks can buy offsets or pre-purchase directly from projects or wholesellers.
Carbon Offsets - everything you ever wanted to know 