Robyn - 3134 Monday, 12 September 2016
Bunnings sell pots designed for flowering annuals that pretty much fit that description. Called "Bloomers" or similar. Not too dear and they often have smallis terracotta pots on sale in summer that only cost a few dollars. I don"t know if they have an online/post service, but you can search their stock online. Just keep in mind not everything they sell is online.