how often do they have these,
In the store I work at these are not normally stocked. But according to employees that have been there longer than I have, they get them in a few times a year.
The following tends to be Michaels sales policy (this is only from my observation of working there for about 3 months)
Get new merchandise in - put it on the shelf at full price.
1 week later -new merchandise is put in the ad - usually 30 -40% off.
next week - merchandise is in the ad at a fixed price (i.e. $9.99, or $10.99) and usually lower than the previous weeks reduced price.
If there are any items left (usually not) then they go back to full price for a month or 2 before being put in the clearance aisle.
Not every item in their ads follow this practice, but a lot of them do. Seasonal and everyday stocked items usually wont follow the above practice. Usually Seasonal will be in an ad at the same price, week after week after week until the store sells out. Then the item goes in the ad at an even greater mark down [:0].
Ryan