Hi David
The main thing is your members, are they all willing to get involved in some way, this is very important. You will need a venue that is not expensive but central with passing trade, parking and with catering facilities, a kitchen at least. The venue you use for your meetings may suffice, has it got tables you can use. You need to appoint a show secretary and you will have an initial outlay at first, you will need drapes, class dividers,printing ie class cards and entry cards and schedules etc. Plant sales donated by members, a tombola with prizes donated by members, cakes and teas etc donated by members and people to man all these things. Timing is important, you must fix a time when the majority of your members have the most in flower, for us it is March as we have some good Dionysia, primula and sax growers. You must advertise the show at every chance you get,local press, local radio,posters in libaries, other local groups, the main AGS, banners and posters on the day. You must also avoid as far as possible other events on the same day in your area and national shows. We do not have prize money but we do have trophies, we have a lady who does tapestry and makes something framed for us, prize cards and local group medals are free from the AGS centre at pershore as are prize stickers. So I would say go for it and if you make a small profit and gain a few new members than thats great, but it is hard work and it needs every member to get involved and the more they put in the more you will get out.. Good luck.