I have not seen the rub-ons but every dollar store is different, we have about 10 stores in greensboro, nc and I find different scrap-items at every one.The other day I found punches and some embossers. I always want to stop at dollar stores and dollar general in any town I go to, even on vac.
One time before we went to a friday night crop, me and a couple of friends stopped by the local Dollar Tree and got so much stuff. Now they are carrying stamp pads. This place is great because I buy birthday gifts for my fellow scrappers who aren't really into all the lumpy and bumpy stuff. It's great and I get more for less!!