From time to time I also want to use clean/new coins and usually there is a much more cheaper option - Hire someone's hardware to mine you some.
Check this site -
https://www.miningrigrentals.com/Also, you could find some topics in this forum for users, renting their Rigs.
Even if someone rented a rig, they would not get a ROI on renting. Hardly get a ROI when buying mining rigs direct. Thanks for spamming your rentals in my thread though.
Even when buying rigs direct, 90% of the mining pools do not reward from coinbase...instead, the full reward is sent to their wallet address and then they will send miners their shares from that wallet address. If buyer would buy from those miners shares, they would be the 3rd transition. You would have to buy directly from mining pools or miners who get rewarded direct from the coinbase.
Mining Pools chances are already have their coins sold before they are even mined.