Yellowbellies and pastels seem to be going for about 50 cents/gram, so at 1000 grams, your yellowbelly would go for $500/$600
Your spider girl will probably be in the $400 range. She's a 2010 and spiders are pretty common. It's all about supply and demand. Yes, you can try to sell them for what they're worth to you, but there's also a market value based on supply and demand. Look at the classified sites, but I think my guesses for prices on your girls will be pretty accurate.