We are looking for 2 sets of 180 go stones. Material doesn’t matter.
Here are the ones I found so far…
Kurokigoishiten sells 4-colored go stones for over $250. Link
I also found green melamine go stones on Aliexpress. ($30) Link
There’s also these green glass stones for about $100. Link
There are also these (180 of green, red, blue, or yellow) each of which cost over $100 with shipping. Link
Are there any other options, particularly something affordable?
Well not really “affordable”, but http://www.algorithmicartisan.com/gostones/goStones.html has some really beautiful stones on sale ^^
Tho im not 100% sure whether they are still in business, their web page looks quite old ://
If you didn’t specifically want “go stones” you could probably get a bunch of glass stones
Obviously you’d have to go looking, but there’s things like that on Etsy, check the sellers, check reviews etc.
Check rough sizes etc - I imagine they’d be less uniform
Algorithmic Artisan sells beautiful stones, on eBay he sells them as shadow436 (his KGS username is Erythen). But as said, a set of stones will set you back at least 500-600 USD.
The glass pebbles / stones advertised on Etsy, mainly for Pente, are a bit smaller and probably irregular in size. I guess that if someone is allready accustomed to the ‘feel’ of playing with double convex stones that would be strange, at least at first.
I have seen colored stones on sale here:
6 Brothers Baduk Colored Stones
A set of 2x180 costs about 110 USD. How to get hold of them is a question I cannot answer but it would be very strange if there’s not a single player on this site who could not help explore the possibilities.
Aftre having taken another look at the German website go-spiele.de I noticed this set:
And on the website from 6 Brothers Baduk I found the same Travel set:
So it seems Hebsacker Verlags imports some of 6 Brothers’ items. My guess is that the colored go stones are one of them. The difference in price is for a large part caused by shipping costs and import fees / taxes. And an added profit margin of course.
That’s just the downside of living in “the west” as a lover of the game and it’s wannahave parts 
I also sell very beautiful exotic stones (unfortunately not for cheap, but much less expensive than the other guy)
