5.25 disks?

["Jayson Smith" <nospamratguyspambegone@nospamplease.bellsouth.ihatespam.net>]

Hi,
This might be a stupid question, but then again maybe not.  I've got three
Apples, but a shortage of the disks they use.  My 3.5 drive will happily use
high dencity 3.5 disks which I have tons of, but aparently the 5.25 drives
don't like the high dencity E.G. 1.2 MB disks.  I don't have very many of
the double dencity? disks, the type Apples normally use.  Are places still
selling those disks, even though they're way out of date, or do you sort of
have to find them as you can?  What's a good price ballpark?
Thanks.