Very very high. These are the most sought after bars Kialara has made. I believe one sold on Scarce City not too long ago (maybe someone can chime in about that) and I want to say (guessing off the top my head here) it went for around 13k..I believe.
Am I allowed to post some digital art, digital collections (NFTs), as a part of this > Collectibles > category?
Only if it's possible to pay with Bitcoin, anything else needs to be in the Altcoin section. Example, if you are just posting a link to OpenSea, it will be moved. This is Bitcointalk and you are in the Bitcoin marketplace section after all.