Sure the Marketplace is the best place to advertise the copper membership. This means buy copper membership ASAP or when the price increase you will pay 300% more
No, not for financial issues:
When the copper membership was introduced for the first time on 11/10/2017, Bitcoin price was around 12k$, so theymos had to increase the copper membership price since Bitcoin dropped to 3,5k$ and it will be adjusted according to market changes.
Earlier today I noticed theymos is endorsing an altcoin indirectly. grin is now accepted for forum payments my response was here
Again, it is not because of financial issues:
Accepting grin for forum payments may drop the forum incomes, and again, theymos knows that:
I don't recommend buying or not buying grin. Due to its emission schedule, I'd guess that its price will have a general downward trend for quite some time, but who knows.
He adopted it just because he believes in it and wants to support it.