i have a huge one that i splurge on every year for my front porch and have another on a wrought iron hanger out front as well.
Out back there is about 8, and some pots that i filled.
The big one that i buy costs me a fortune but its my only big purchase, and i make sure its got just about everything in it, the rest i make up myself, i go into a garden centre and buy the pots already made up, for about 8 to 10 dollars, bring them home and seperate the
flowers and replant them elsewhere and toss the pots out, i am on a first name basis with the girls at the wal-mart garden centre now