I'm donating a hollow form of ~10" diameter to a fundraiser auction and need to submit a fair market/retail value. I usually put a value of ~$60-80 for a typical medium size bowl (decorative, not utility), but have not donated a hollow form before. Any guidance is appreciated. I was thinking something in the realm of $200. Exact price isn't crucial, but I wanted to get an idea what others would typically consider a fair price/value.