I think Ivy New York is in hong kong. They have a lsrge inventory, perhaps they will have some heated with minor residues stones for you to compare agsinst? Otherwise I am with Arkieb I think Hong Kong has several open to the public shows towards the end of the year you may get an idea there -- unfortunately you will have to battle against the need to know what you are comparing against had a similar level of treatment (your stone is worth a small fraction of what an unheated one, or even a heat only stone would be worth) and the need to bargain for an accurate price at the show. Totally doable though, and sounds like fun!
I am also projecting arround >5k though. Heated with residues just isnt that rare.
I’d love to visit some exhibition in hk or singapore, I’ll check if there is anything coming soon.. but isn’t easy for me because I don’t know stones much to find out if it’s similar to mine, inclusions and all other characteristics.. I’ll see tho ! Thanks