Buying Great Statue and Scenic Painting

[Broccolo]

Hi. Would anyone have a Great statue and a Scenic painting I could buy please?

 

[Firesquids]

Hello again I can sell you both for 8 tbt total.

 

[Broccolo]

Hello! That's very kind of you. I have just donated 8 tbt.
How do I acquire tbt? I didn't know there was such a thing, and discovered earlier in the day I had 69 of them.