I would offer at least 40 - 60..... To resell them I would do 50 cents or lower per adult female, some places do adult males for free so that's up to you, then I would do... smalls 1/4" - 1/2", 50 for $5, 100 for $10, 200 for $15, 300 for $20, etc, then mediums 5/8" - 7/8", 50 for $10, 100 for $15, 200 for $20, 300 for $25, etc. And then large anything bigger than 7/8" but not adults yet, 50 for $15, 100 for $20, 200 for $25, 300 for $30, etc.
You could either lower or higher prices to your standards, but I've researched alot of sites and those prices are a slight bit cheaper than the cheapest site I've been on.
And If you do decide to sell some I would definitely like to purchase
Hope I helped
-steph