I have about 60 of these snails (achatina fulica) to give away. They make great, low-maintenance pets. If you are not familiar with them, the basics are:
You will need a soft substrate like soil for them to dig in (they like to burrow sometimes). Mist the inside of the tank with a spray-bottle of water every day or every other day to keep their environment moist. Provide them with fresh vegetables (some also eat fruit) at all times, but take out rotting items. Make sure there is always a cuttlefish bone in the tank - they will gnaw on this for calcium for their shells.
For more detail on keeping them, please visit http://www.thesnailtrail.co.uk
or PM me.
A note on breeding:
These snails can and do alternate between male and female, but it still takes two snails to breed (one will become male and the other female). HOWEVER, they breed when one shoots a "sperm dart" into the other one's skin, and the sperm can remain in that snail's body for quite a while - I have read that this can be up to two years.
So, if your snail has been kept in the same tank as another snail when sexually mature, you could end up w/ babies even after it's on its own. I'm not sure exactly when they are sexually mature, but mine did not breed until they reached what seems to be their full size (a little over 3 inches). We had them for at least a few months before that and there were no eggs.
If you do get hold of a possibly fertile snail, or want to keep two or more, just check every few days for eggs in the substrate. They are small, white and round and might be buried. Take them out and freeze them, then dispose of them.
EDIT: Forgot to mention except in title - these are NOT adults. They are babies, as indicated in the pic of them posing with a 5p coin. Adults grow to 3-4 inches long in shell length.
Collection only from Birmingham.
Delivery also possible w/in reasonable distance of Birmingham.