Ronald Haines, through his business Haines House of Cards, sold a deck of gaffed cards called 'Fa-Ko' cards. This deck is not anymore available but perhaps you can find it second hand. However, now that it is very easy to make your own playing cards (see DIY Playing Cards) this collection has gained in value.

From the foreword

The gimmicked cards required are listed at the beginning of each effect. The regular cards needed must be removed from a regular matching pack.

This FA-KO Pack is not a toy for children, nor is it a collection of "self-working" tricks. It is a collection of professional secrets,...