They’re both pretty hard to find, same goes with reversed symbol sparkleworks and sweetberry 2 (also set mates). As they’re g3s you should be able to snag them for quite low, I’d say under 20 euros
I’d suggest waiting for one to come up for a good price, I’ve seen minty come up and sell for as little as $5 last year, just depends who else is looking at the time! Tink went for $28 new in a box so I wouldn’t pay any more than that for a loose one. Her set mate sweetberry 2 went for only $10 boxed. They’re definitely rare but not crazy money, and Tink is far more popular than Sweetberry. I got my loose sweetberry for around $5
I don’t believe these were properly sold outside of the USA so make sure to factor in shipping and customs fees if you don’t have an American address!
All the best on your quest to add these lovelies to your collection!
Sunsparkle x