There are several factors that should be considered before purchasing any potting bench or garden potting work bench. First make sure that the bench is made of high-quality materials and has a deep work area at the right height. You won't want to have to stoop or reach up to work at the bench.
Determine whether or not you will want to have a removable bucket that can hold potting soil or be used to collect extra dirt that falls from plants being repotted. Some benches have a handy raised wood edge that keeps the dirt from spilling and creating a mess in your backyard or patio.
The bench top should provide a good solid surface to work or write.