this topic was just posted a few days or a week ago, there are many ideas on what to stuff them with. As far as cleaning goes my dogs ussually clean them themselves but actually I THINK they may be dishwasher safe. I just rinse mine out with hot water.

As far as pricing goes I live in upstate NY & I spend about 15-20 bucks on the large ones at stores (may be cheaper on the internet but I hate to use my credit card unless its an emergancy so I shop in the stores) But i think the prices you mentioned are faily resonable.

http://petoftheday.com/talk/showthread.php?s=&threadid=41327&highlight=kong

How big is jasper? If shes a med. sized dog Id get the med size bone or maybe large.