J.
Hi - as someone who also has a collection of Precious Moments that dates back to the 80's with "special" collector pieces, my opinion is that unfortunately, these really were not able to appreciate in any value as they really were mass market produced pieces. The prices listed in the collectors books are "suggested value", and only good if someone is willing to pay that price.
Thousands are listed on Ebay and only selling for a few dollars each. I was able to sell a few at a garage sale for $20 each. Hope you have better luck -
J.