BCG---I've never had a Garage sale,only a few yard sales!
Advice---Don't plan on getting,what things are worth.All you can get,is the money that people can spend!They are also,looking for a bargain!
If you can,the variety of items can be increased by sharing the sale,with relatives & friends.
Expect people to come late in the day,to get bargains on things!
Around here,there are people,that actually make a living,by coming,late in the afternoon,getting what you have left over& having their own sale when they have enough things!
Big things,like exercise equipment,don't sell that good because people don't have even near the money that they are worth.
Irish

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Irish---Better to be dead & cool,then alive & uncool!
(Harley Davidson & the Marlboro Man)