Hi Mike,
The Bought you a Gift 479 came out in 1987 and is going on average for $15 new in box. Between the years of 2008 to 2013 they were bringing up to $60
The Chick Girl 57/0 was make between 1972 through 1979 TMK5. On eBay they are selling on average for $18 I believe this is because they are so many fakes being sold. At antique auctions I have seen them go for as much as $260 but most go between $100 to $125.
Heavenly Angel 21/0: I can’t find this exact trade mark. At auction these are selling between $10 to $55 depending on the trade mark at the bottom.
I have included a link for Hummel trademarks below:
http://www.icollecthummel.com/learn-about/article.aspx?id=192
Hope this helps,