Kerry,

Believe it or not, "collectable" is now an accepted variation of the word collectible. (Probably because so many people speeld it rong! ) Here's what Merriam Webster has:

"One entry found for collectible.
Main Entry: 2collectible
Variant(s): or collectable
Function: noun
: an object that is collected by fanciers; especially : one other than such traditionally collectible items as art, stamps, coins, and antiques"