It's actually on sale for 30% off for this week. The add on is also available in her store at Stuff to Scrap for just $1.99.
Wait that's not all lol. If you spend at least $2.79 at Ashley's store, you can get the add on for free with this coupon code: Steampunk_Blog this week only! If you'd like to try the kit out before you buy, you can get a sample of the add on at Seal Scraps' blog. Click on the sample preview to head over to her blog.