This might also applies to Title of nobility auction!
Some info on the chain of reasoning:
At the moment someone is willing to pay 2,000,001 gold for training lessons, so to be on the safe side lets say that double that (4,000,002) gold has been offered in total if you sum it all up.
Blacksmith services are at 101 gold at the moment so thats small fry compared to the training lessons at the moment.
Why not make it a lottery with lets say 10k gold per ticket, maximum 50(?) tickets?
That makes it possible for everyone to dedicate 500k to get the blacksmith services or training lessons.
And of course they should be possible to sell if you win them but don't need or want it(or just desperately/greedily want more gold).
The money spent here should go to the money lottery to make it even more attractive.
The whole point with this suggestion is that those players with less then a few million gold can get access to these and of course its a lottery, its a thrill in and of itself.
Just keep in mind that you should be able to sell the blacksmith services or training lessons at will if you win them, so it will not take away the possibility to grind your way to them.
And the final point,
I believe that this will increase the interest in training lessons and blacksmith services to such an extent that the prices on them will go up for those lucky/greedy few that decides to sell them instead of use them
Oh and first post ever on the forums, yay!